\u4e94\u3001\u8fd4\u56de\u503c（\u76ee\u6807\u6620\u5c04）<\/span><\/h4>\n\u8fd4\u56de\u00a0len，\u5373\u00a0\u5c06\u00a0x\u00a0\u51cf\u5230 0 \u6240\u9700\u7684\u6700\u5c11\u64cd\u4f5c\u6570\u3002\u82e5\u65e0\u6cd5\u5b9e\u73b0，\u8fd4\u56de -1\u3002<\/p>\n
\u4e09.\u4ee3\u7801<\/h2>\n
class Solution
\n{
\npublic:
\n int minOperations(vector<int>& nums, int x)
\n {
\n \/\/ \u7b97\u6cd5\u601d\u8def：\u9006\u5411\u601d\u7ef4
\n \/\/ \u9898\u76ee\u8981\u6c42\u4ece\u6570\u7ec4\u4e24\u7aef\u79fb\u9664\u5143\u7d20，\u4f7f\u5f97\u79fb\u9664\u7684\u5143\u7d20\u4e4b\u548c\u7b49\u4e8e x\u3002
\n \/\/ \u8fd9\u7b49\u4ef7\u4e8e：\u5728\u6570\u7ec4\u4e2d\u95f4\u4fdd\u7559\u4e00\u4e2a\u8fde\u7eed\u5b50\u6570\u7ec4，\u5176\u548c = \u6570\u7ec4\u603b\u548c – x\u3002
\n \/\/ \u95ee\u9898\u8f6c\u5316\u4e3a：\u5bfb\u627e\u6700\u957f\u8fde\u7eed\u5b50\u6570\u7ec4，\u4f7f\u5176\u548c\u4e3a target = sum – x\u3002
\n \/\/ \u7136\u540e\u7528\u6570\u7ec4\u603b\u957f\u5ea6 n \u51cf\u53bb\u8be5\u5b50\u6570\u7ec4\u957f\u5ea6，\u5373\u4e3a\u6700\u5c11\u64cd\u4f5c\u6b21\u6570\u3002
\n \/\/ \u82e5 target < 0 \u6216\u4e0d\u5b58\u5728\u8fd9\u6837\u7684\u5b50\u6570\u7ec4，\u5219\u8fd4\u56de -1\u3002<\/p>\n
int n = nums.size();<\/p>\n
\/\/ 1. \u8ba1\u7b97\u6570\u7ec4\u603b\u548c sum1
\n int sum1 = 0; \/\/ \u6570\u7ec4\u6240\u6709\u5143\u7d20\u4e4b\u548c
\n for (int i = 0; i < n; i++)
\n {
\n sum1 += nums[i];
\n }<\/p>\n
\/\/ \u7279\u6b8a\u60c5\u51b5：\u5982\u679c\u6574\u4e2a\u6570\u7ec4\u7684\u548c\u6b63\u597d\u7b49\u4e8e x，\u5219\u53ea\u9700\u79fb\u9664\u6574\u4e2a\u6570\u7ec4，\u64cd\u4f5c\u6b21\u6570\u4e3a n
\n if (sum1 == x)
\n {
\n return n;
\n }<\/p>\n
\/\/ \u5982\u679c x \u4e3a\u8d1f\u6570（\u9898\u76ee\u4e0d\u4f1a\u51fa\u73b0，\u4f46\u4e3a\u5065\u58ee\u6027\u5904\u7406），\u8fd4\u56de -1
\n if (x < 0)
\n {
\n return -1;
\n }<\/p>\n
\/\/ \u76ee\u6807\u503c：\u9700\u8981\u4fdd\u7559\u7684\u8fde\u7eed\u5b50\u6570\u7ec4\u7684\u548c
\n int target = sum1 – x;
\n int sum2 = 0; \/\/ \u5f53\u524d\u7a97\u53e3\u5185\u5143\u7d20\u7684\u548c
\n int len = INT_MAX; \/\/ \u8bb0\u5f55\u6700\u5c11\u64cd\u4f5c\u6b21\u6570（\u521d\u59cb\u5316\u4e3a\u6700\u5927\u503c）
\n int left = 0, right = 0; \/\/ \u6ed1\u52a8\u7a97\u53e3\u7684\u5de6\u53f3\u6307\u9488<\/p>\n
\/\/ 2. \u6ed1\u52a8\u7a97\u53e3：\u5bfb\u627e\u548c\u4e3a target \u7684\u6700\u957f\u8fde\u7eed\u5b50\u6570\u7ec4
\n \/\/ \u53f3\u6307\u9488\u4e0d\u65ad\u5411\u53f3\u6269\u5c55，\u7d2f\u52a0\u5143\u7d20\u5230 sum2
\n for (right = 0; right < n; right++)
\n {
\n sum2 += nums[right]; \/\/ \u5165\u7a97\u53e3<\/p>\n
\/\/ \u5f53\u7a97\u53e3\u5185\u548c\u5927\u4e8e target \u65f6，\u9700\u8981\u6536\u7f29\u5de6\u8fb9\u754c，\u76f4\u5230 sum2 <= target
\n \/\/ \u6ce8\u610f：left < right \u9632\u6b62 left \u8d8a\u754c（\u5f53 left == right \u4e14 sum2 > target \u65f6，\u4f1a\u5148\u6536\u7f29 left）
\n while (left < right && target < sum2)
\n {
\n sum2 -= nums[left]; \/\/ \u51fa\u7a97\u53e3
\n left++; \/\/ \u5de6\u6307\u9488\u53f3\u79fb
\n }<\/p>\n
\/\/ \u5982\u679c\u7a97\u53e3\u5185\u548c\u6070\u597d\u7b49\u4e8e target，\u5219\u8bf4\u660e\u627e\u5230\u4e86\u4e00\u4e2a\u6709\u6548\u7684\u8fde\u7eed\u5b50\u6570\u7ec4
\n \/\/ \u5176\u957f\u5ea6\u4e3a right – left + 1，\u5bf9\u5e94\u7684\u64cd\u4f5c\u6b21\u6570\u4e3a n – \u5b50\u6570\u7ec4\u957f\u5ea6
\n if (target == sum2)
\n {
\n \/\/ \u66f4\u65b0\u6700\u5c11\u64cd\u4f5c\u6b21\u6570（\u4fdd\u7559\u7684\u5b50\u6570\u7ec4\u8d8a\u957f，\u64cd\u4f5c\u6b21\u6570\u8d8a\u5c11）
\n len = min(len, n – (right – left + 1));
\n }
\n }<\/p>\n
\/\/ 3. \u5982\u679c len \u4ecd\u4e3a INT_MAX，\u8bf4\u660e\u4e0d\u5b58\u5728\u548c\u4e3a target \u7684\u5b50\u6570\u7ec4，\u8fd4\u56de -1
\n if (len == INT_MAX)
\n {
\n return -1;
\n }
\n \/\/ \u5426\u5219\u8fd4\u56de\u6700\u5c11\u64cd\u4f5c\u6b21\u6570
\n return len;
\n }
\n}; <\/p>\n
\u56db\u3001\u6613\u9519\u70b9\u5206\u6790<\/h2>\n\u96be\u70b9\u4e00：\u95ee\u9898\u8f6c\u5316\u2014\u2014\u4e3a\u4ec0\u4e48\u7528\u201c\u4fdd\u7559\u5b50\u6570\u7ec4\u201d\u4ee3\u66ff\u201c\u4e24\u7aef\u79fb\u9664\u201d？<\/h4>\n
int target = sum1 – x; <\/p>\n
\u6838\u5fc3\u96be\u70b9：<\/span> \u9898\u76ee\u8981\u6c42\u4ece\u6570\u7ec4\u4e24\u7aef\u79fb\u9664\u5143\u7d20，\u4f7f\u5176\u548c\u6070\u597d\u7b49\u4e8e\u00a0x，\u6c42\u6700\u5c11\u64cd\u4f5c\u6570\u3002\u76f4\u63a5\u6a21\u62df\u4e24\u7aef\u79fb\u9664\u975e\u5e38\u590d\u6742\u3002 \u9006\u5411\u601d\u7ef4：\u79fb\u9664\u7684\u5143\u7d20\u548c\u7b49\u4e8e\u00a0x，\u90a3\u4e48\u672a\u88ab\u79fb\u9664\u7684\u4e2d\u95f4\u8fde\u7eed\u90e8\u5206\u7684\u548c\u5fc5\u7136\u7b49\u4e8e\u00a0sum – x\u3002\u56e0\u6b64\u95ee\u9898\u8f6c\u5316\u4e3a：\u5728\u6570\u7ec4\u4e2d\u627e\u5230\u548c\u6700\u63a5\u8fd1\u6216\u6070\u597d\u7b49\u4e8e\u00a0target\u00a0\u7684\u8fde\u7eed\u5b50\u6570\u7ec4，\u4e14\u6211\u4eec\u60f3\u8981\u8fd9\u4e2a\u5b50\u6570\u7ec4\u5c3d\u53ef\u80fd\u957f（\u56e0\u4e3a\u5269\u4f59\u8981\u79fb\u9664\u7684\u5143\u7d20\u6570\u91cf =\u00a0n – \u5b50\u6570\u7ec4\u957f\u5ea6，\u8d8a\u957f\u64cd\u4f5c\u8d8a\u5c11）\u3002 \u96be\u70b9\u5728\u4e8e\u4ece\u201c\u4e24\u7aef\u53d6\u201d\u81ea\u7136\u8fc7\u6e21\u5230\u201c\u4e2d\u95f4\u7559\u201d，\u9700\u8981\u660e\u786e\u7406\u89e3\u00a0target\u00a0\u7684\u542b\u4e49\u4ee5\u53ca\u4e3a\u4ec0\u4e48\u4fdd\u7559\u5b50\u6570\u7ec4\u8d8a\u957f\u8d8a\u597d\u3002<\/p>\n
\n\u96be\u70b9\u4e8c：\u6ed1\u52a8\u7a97\u53e3\u7ef4\u62a4\u7684\u76ee\u6807\u2014\u2014\u662f\u627e\u201c\u548c\u7b49\u4e8e target\u201d\u7684\u7a97\u53e3，\u800c\u975e\u201c\u4e0d\u8d85\u8fc7 target\u201d<\/h4>\n
while (left < right && target < sum2)
\n{
\n sum2 -= nums[left];
\n left++;
\n}
\nif (target == sum2)
\n{
\n len = min(len, n – (right – left + 1));
\n} <\/p>\n
\u7406\u89e3\u4e0a\u7684\u969c\u788d：<\/span> \u5e38\u89c4\u6ed1\u52a8\u7a97\u53e3\u901a\u5e38\u7528\u4e8e\u627e\u201c\u548c \u2265 target\u201d\u6216\u201c\u548c \u2264 target\u201d\u7684\u6700\u957f\/\u6700\u77ed\u5b50\u6570\u7ec4\u3002\u800c\u672c\u4ee3\u7801\u4e2d，while\u00a0\u6536\u7f29\u6761\u4ef6\u00a0target < sum2\u00a0\u53ea\u662f\u4e3a\u4e86\u4fdd\u8bc1\u7a97\u53e3\u548c\u4e0d\u5927\u4e8e\u00a0target，\u4f46\u4e0d\u4f1a\u7ee7\u7eed\u6536\u7f29\u5230\u00a0sum2 < target，\u56e0\u4e3a\u5143\u7d20\u90fd\u662f\u6b63\u6570，\u4e00\u65e6\u00a0sum2\u00a0\u964d\u5230 \u2264\u00a0target，\u5c31\u53ef\u80fd\u7b49\u4e8e\u6216\u5c0f\u4e8e\u3002 \u5173\u952e：\u6536\u7f29\u540e，\u6211\u4eec\u53ea\u5173\u5fc3\u00a0sum2 == target\u00a0\u7684\u60c5\u51b5，\u800c\u4e0d\u5173\u6ce8\u5c0f\u4e8e target \u7684\u60c5\u51b5（\u56e0\u4e3a\u5c0f\u4e8e target \u65e0\u6cd5\u901a\u8fc7\u6269\u5927\u53f3\u8fb9\u754c\u518d\u6062\u590d？\u5b9e\u9645\u4e0a，\u53f3\u8fb9\u754c\u7ee7\u7eed\u6269\u5c55\u540e\u53ef\u80fd\u518d\u6b21\u7b49\u4e8e target）\u3002\u8fd9\u8981\u6c42\u7406\u89e3\u6bcf\u6b21\u53f3\u8fb9\u754c\u56fa\u5b9a\u65f6，\u6211\u4eec\u901a\u8fc7\u6536\u7f29\u5de6\u8fb9\u754c\u5f97\u5230\u5f53\u524d\u53f3\u7aef\u70b9\u4e0b\u7684\u6700\u5c0f\u5408\u6cd5\u7a97\u53e3（\u548c \u2264 target），\u7136\u540e\u5224\u65ad\u662f\u5426\u6070\u597d\u7b49\u4e8e target，\u4ece\u800c\u8bb0\u5f55\u6709\u6548\u89e3\u3002 \u96be\u70b9\u5728\u4e8e\u533a\u5206\u201c\u6536\u7f29\u8fc7\u7a0b\u201d\u548c\u201c\u5224\u65ad\u76f8\u7b49\u201d\u662f\u4e24\u4e2a\u72ec\u7acb\u6b65\u9aa4，\u5e76\u4e14\u00a0while\u00a0\u6761\u4ef6\u91cc\u7528\u4e86\u00a0target < sum2\u00a0\u800c\u4e0d\u662f\u00a0sum2 > target（\u7b49\u4ef7），\u4f46\u9690\u542b\u4e86\u00a0sum2\u00a0\u53ef\u80fd\u5c0f\u4e8e target \u7684\u60c5\u51b5\u4f1a\u88ab\u4fdd\u7559，\u7b49\u5f85\u540e\u7eed\u6269\u5c55\u3002<\/p>\n
\n\u96be\u70b9\u4e09：\u7528\u00a0min\u00a0\u66f4\u65b0\u00a0len\u00a0\u7b49\u4ef7\u4e8e\u5bfb\u627e\u6700\u957f\u4fdd\u7559\u5b50\u6570\u7ec4<\/h4>\n
len = min(len, n – (right – left + 1)); <\/p>\n
\u5bb9\u6613\u4ea7\u751f\u7684\u56f0\u60d1：<\/span> \u521d\u59cb\u5316\u00a0len = INT_MAX，\u6bcf\u627e\u5230\u4e00\u4e2a\u548c\u7b49\u4e8e\u00a0target\u00a0\u7684\u7a97\u53e3，\u5c31\u8ba1\u7b97\u64cd\u4f5c\u6570\u00a0n – \u7a97\u53e3\u957f\u5ea6，\u5e76\u53d6\u6700\u5c0f\u503c\u3002 \u7531\u4e8e\u00a0n\u00a0\u662f\u56fa\u5b9a\u7684，n – \u7a97\u53e3\u957f\u5ea6\u00a0\u8d8a\u5c0f，\u610f\u5473\u7740\u7a97\u53e3\u957f\u5ea6\u8d8a\u5927\u3002\u56e0\u6b64\u591a\u6b21\u53d6\u6700\u5c0f\u64cd\u4f5c\u6570\u7b49\u4ef7\u4e8e\u5728\u6240\u6709\u53ef\u884c\u7a97\u53e3\u4e2d\u53d6\u6700\u5927\u957f\u5ea6\u3002 \u96be\u70b9\u5728\u4e8e：\u4ee3\u7801\u6ca1\u6709\u663e\u5f0f\u5730\u7ef4\u62a4\u4e00\u4e2a\u201c\u6700\u5927\u7a97\u53e3\u957f\u5ea6\u201d\u53d8\u91cf，\u800c\u662f\u76f4\u63a5\u66f4\u65b0\u64cd\u4f5c\u6570，\u8fd9\u9700\u8981\u7406\u89e3\u4e24\u8005\u4e4b\u95f4\u7684\u7b49\u4ef7\u6027\u3002\u540c\u65f6，\u56e0\u4e3a\u6ed1\u52a8\u7a97\u53e3\u53ef\u80fd\u627e\u5230\u591a\u4e2a\u91cd\u53e0\u7a97\u53e3，\u53d6\u6700\u5c0f\u64cd\u4f5c\u6570\u4fdd\u8bc1\u4e86\u5168\u5c40\u6700\u4f18\u3002<\/p>\n\u4e94\u3001\u6d41\u7a0b\u56fe<\/h2>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815130923-6a8065038f764.png\")
<\/p>\n
\u00a0🎯 \u95ed\u5e55<\/h3>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815130929-6a806509c54bb.jpg\")
<\/p>\n<\/p>\n
🎉 \u606d\u559c\u4f60\u5b8c\u6210\u4e86\u300c\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\u300d\u95ee\u9898\u7684\u5b66\u4e60！<\/p>\n
\u4e3a\u4e86\u5de9\u56fa\u77e5\u8bc6\u5e76\u8fdb\u4e00\u6b65\u62d3\u5c55，\u5efa\u8bae\u4f60：<\/p>\n
🚀\u00a0\u52a8\u624b\u5b9e\u8df5 \u5728 LeetCode \u4e0a\u63d0\u4ea4\u4ee3\u7801，\u5c1d\u8bd5\u4e0d\u540c\u7684\u6d4b\u8bd5\u7528\u4f8b\u3002<\/p>\n
💡\u00a0\u6df1\u5165\u601d\u8003<\/p>\n
\n- \n
\u672c\u9898\u91c7\u7528\u00a0\u9006\u5411\u601d\u7ef4，\u5c06\u201c\u4ece\u4e24\u7aef\u79fb\u9664\u5143\u7d20\u201d\u8f6c\u5316\u4e3a\u00a0\u5bfb\u627e\u4e2d\u95f4\u8fde\u7eed\u5b50\u6570\u7ec4，\u4f7f\u8be5\u5b50\u6570\u7ec4\u548c\u4e3a\u00a0sum – x\u3002\u8bf7\u95ee\u00a0\u4e3a\u4ec0\u4e48\u8fd9\u6837\u8f6c\u5316\u662f\u7b49\u4ef7\u7684？\u5176\u6570\u5b66\u4f9d\u636e\u662f\u4ec0\u4e48？<\/p>\n<\/li>\n
- \n
\u4ee3\u7801\u4e2d\u6ed1\u52a8\u7a97\u53e3\u5bfb\u627e\u7684\u662f\u00a0\u548c\u4e3a target \u7684\u6700\u957f\u8fde\u7eed\u5b50\u6570\u7ec4，\u800c\u4e0d\u662f\u76f4\u63a5\u6c42\u6700\u5c0f\u64cd\u4f5c\u6570\u3002\u4e3a\u4ec0\u4e48\u6700\u957f\u5b50\u6570\u7ec4\u5bf9\u5e94\u6700\u5c11\u64cd\u4f5c\u6570？<\/p>\n<\/li>\n
- \n
\u5f53\u00a0target\u00a0\u5c0f\u4e8e 0 \u65f6，\u76f4\u63a5\u8fd4\u56de -1，\u8fd9\u662f\u5426\u5408\u7406？\u5982\u679c\u00a0sum1 == x\u00a0\u65f6\u8fd4\u56de\u00a0n，\u8fd9\u79cd\u60c5\u51b5\u5bf9\u5e94\u4ec0\u4e48\u573a\u666f？<\/p>\n<\/li>\n
- \n
\u6570\u7ec4\u5143\u7d20\u5747\u4e3a\u00a0\u6b63\u6574\u6570，\u8fd9\u5bf9\u6ed1\u52a8\u7a97\u53e3\u7684\u6709\u6548\u6027\u81f3\u5173\u91cd\u8981\u3002\u5982\u679c\u6570\u7ec4\u4e2d\u5b58\u5728\u00a0\u8d1f\u6570，\u5f53\u524d\u7b97\u6cd5\u8fd8\u6b63\u786e\u5417？\u4e3a\u4ec0\u4e48？<\/p>\n<\/li>\n<\/ul>\n
📚\u00a0\u5ef6\u4f38\u6311\u6218<\/p>\n
\n- \n
\u5982\u679c\u9898\u76ee\u8981\u6c42\u00a0\u8f93\u51fa\u5177\u4f53\u79fb\u9664\u7684\u65b9\u6848（\u4f8b\u5982\u6700\u5de6\u8fb9\u79fb\u9664\u51e0\u4e2a，\u6700\u53f3\u8fb9\u79fb\u9664\u51e0\u4e2a），\u800c\u4e0d\u662f\u53ea\u8fd4\u56de\u64cd\u4f5c\u6b21\u6570，\u4f60\u7684\u4ee3\u7801\u5e94\u5982\u4f55\u6539\u9020\u4ee5\u8bb0\u5f55\u65b9\u6848？<\/p>\n<\/li>\n
- \n
\u5982\u679c\u5c06\u95ee\u9898\u6539\u4e3a\u00a0\u201c\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5927\u64cd\u4f5c\u6570\u201d（\u5373\u5c3d\u91cf\u591a\u79fb\u9664\u5143\u7d20，\u4f46\u6700\u540e\u4ecd\u8981\u6070\u597d\u51cf\u5230 0），\u7b97\u6cd5\u5e94\u5982\u4f55\u8c03\u6574？<\/p>\n<\/li>\n<\/ul>\n
\u5982\u679c\u4f60\u89c9\u5f97\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9，\u6b22\u8fce：<\/p>\n
👍\u00a0\u70b9\u8d5e \/ \u6536\u85cf 👤\u00a0\u5173\u6ce8\u4f5c\u8005，\u83b7\u53d6\u66f4\u591a\u9898\u89e3 💬\u00a0\u7559\u8a00\u4ea4\u6d41\u4f60\u7684\u7591\u95ee\u6216\u4f18\u5316\u601d\u8def<\/p>\n
\n📌\u00a0\u6df1\u5165\u601d\u8003\u7b54\u6848<\/p>\n
\n- \n
\u8f6c\u5316\u4f9d\u636e：\u6570\u7ec4\u4e24\u7aef\u7684\u79fb\u9664\u5143\u7d20\u4e4b\u548c\u7b49\u4e8e x，\u7b49\u4ef7\u4e8e\u00a0\u5269\u4f59\u4e2d\u95f4\u8fde\u7eed\u90e8\u5206\u7684\u5143\u7d20\u4e4b\u548c = \u603b\u548c – x\u3002\u56e0\u4e3a\u79fb\u9664\u64cd\u4f5c\u662f\u4ece\u4e24\u7aef\u4e0d\u65ad\u5265\u79bb，\u6700\u540e\u5269\u4e0b\u7684\u5fc5\u7136\u662f\u4e00\u4e2a\u8fde\u7eed\u5b50\u6570\u7ec4，\u6240\u4ee5\u539f\u95ee\u9898\u8f6c\u4e3a\u00a0\u627e\u5230\u548c\u4e3a target \u7684\u6700\u957f\u8fde\u7eed\u5b50\u6570\u7ec4\u3002<\/p>\n<\/li>\n
- \n
\u6700\u957f\u5b50\u6570\u7ec4\u5bf9\u5e94\u6700\u5c11\u64cd\u4f5c\u6570：\u56e0\u4e3a\u64cd\u4f5c\u6570 = \u603b\u5143\u7d20\u4e2a\u6570 – \u4fdd\u7559\u7684\u5b50\u6570\u7ec4\u957f\u5ea6，\u4fdd\u7559\u5f97\u8d8a\u957f，\u79fb\u9664\u7684\u5143\u7d20\u8d8a\u5c11，\u64cd\u4f5c\u6570\u8d8a\u5c11\u3002\u56e0\u6b64\u6c42\u6700\u957f\u4fdd\u7559\u957f\u5ea6\u5373\u53ef\u5f97\u5230\u6700\u5c11\u64cd\u4f5c\u6570\u3002<\/p>\n<\/li>\n
- \n
target < 0\u00a0\u65f6（\u5373 x > \u603b\u548c），\u6c38\u8fdc\u65e0\u6cd5\u51cf\u5230 0，\u8fd4\u56de -1 \u6b63\u786e；sum1 == x\u00a0\u65f6，\u4fdd\u7559\u5b50\u6570\u7ec4\u957f\u5ea6\u4e3a 0（\u5373\u79fb\u9664\u5168\u90e8\u5143\u7d20），\u64cd\u4f5c\u6570\u4e3a n，\u4ee3\u7801\u76f4\u63a5\u8fd4\u56de n \u662f\u6b63\u786e\u7684\u6700\u4f18\u89e3\u3002<\/p>\n<\/li>\n
- \n
\u5b58\u5728\u8d1f\u6570\u65f6\u6ed1\u52a8\u7a97\u53e3\u5931\u6548，\u56e0\u4e3a\u7a97\u53e3\u548c\u4e0d\u518d\u5355\u8c03（\u589e\u52a0\u8d1f\u6570\u4f1a\u51cf\u5c11\u548c），\u6536\u7f29\u6761\u4ef6\u00a0sum2 > target\u00a0\u4e0d\u518d\u80fd\u4fdd\u8bc1\u901a\u8fc7\u5de6\u79fb\u6765\u8c03\u6574，\u5fc5\u987b\u4f7f\u7528\u524d\u7f00\u548c + \u54c8\u5e0c\u6216\u53cc\u7aef\u961f\u5217\u7b49\u66f4\u590d\u6742\u65b9\u6cd5，\u56e0\u6b64\u672c\u9898\u9650\u5b9a\u6b63\u6574\u6570\u662f\u5fc5\u8981\u7684\u3002<\/p>\n<\/li>\n<\/ul>\n
🔍\u00a0\u5ef6\u4f38\u6311\u6218\u7b54\u6848<\/p>\n
\n- \n
\u6311\u62181：\u5728\u6ed1\u52a8\u7a97\u53e3\u627e\u5230\u548c\u4e3a target \u7684\u6700\u957f\u5b50\u6570\u7ec4\u540e，\u8bb0\u5f55\u5176\u8d77\u59cb\u548c\u7ed3\u675f\u4e0b\u6807，\u5219\u79fb\u9664\u7684\u5de6\u7aef\u4e2a\u6570 = \u8d77\u59cb\u4e0b\u6807，\u53f3\u7aef\u4e2a\u6570 = n – \u7ed3\u675f\u4e0b\u6807 – 1，\u5373\u53ef\u8f93\u51fa\u5177\u4f53\u65b9\u6848\u3002<\/p>\n<\/li>\n
- \n
\u6311\u62182：\u82e5\u8981\u6c42\u6700\u5927\u64cd\u4f5c\u6570，\u5219\u9700\u00a0\u4fdd\u7559\u6700\u77ed\u7684\u8fde\u7eed\u5b50\u6570\u7ec4（\u548c\u4ecd\u4e3a target），\u5373\u6c42\u6700\u77ed\u7684\u6ee1\u8db3\u548c\u4e3a target \u7684\u8fde\u7eed\u5b50\u6570\u7ec4\u957f\u5ea6，\u7136\u540e\u7528 n \u51cf\u53bb\u8be5\u957f\u5ea6\u5f97\u5230\u6700\u5927\u64cd\u4f5c\u6570；\u53ea\u9700\u5c06\u6c42\u6700\u957f\u6539\u4e3a\u6c42\u6700\u77ed\u5373\u53ef（\u8bb0\u5f55\u6700\u5c0f\u957f\u5ea6）\u3002<\/p>\n<\/li>\n<\/ul>\n
\u795d\u4f60\u5728\u00a0\u7b97\u6cd5\u4e4b\u8def\u00a0\u4e0a\u8d8a\u8d70\u8d8a\u7a33，\u65e9\u65e5\u653b\u514b\u6bcf\u4e00\u9053\u96be\u9898！\u4e0b\u6b21\u89c1 🚀\u2728<\/p>\n","protected":false},"excerpt":{"rendered":"
👋 \u6b22\u8fce\u9605\u8bfb \u4e00.\u9898\u76ee
\n1658. \u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570 – \u529b\u6263（LeetCode）
\n\u200b
\n🎯 \u6b22\u8fce\u6765\u5230\u300c\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\u300d\u9898\u89e3\u4e4b\u65c5！\u00a0\u672c\u6587\u5c06\u5e26\u4f60\u4ece\u201c\u4ece\u6570\u7ec4\u4e24\u7aef\u79fb\u9664\u5143\u7d20\u4f7f\u603b\u548c\u6070\u597d\u4e3a x\u201d\u8fd9\u4e00\u9006\u5411\u601d\u7ef4\u95ee\u9898\u51fa\u53d1，\u6df1\u5165\u7406\u89e3\u6ed1\u52a8\u7a97\u53e3\u7684\u5de7\u5999\u8f6c\u5316，\u5e76\u638c\u63e1\u5982\u4f55\u901a\u8fc7\u5bfb\u627e\u6700\u957f\u8fde\u7eed\u5b50\u6570\u7ec4\u6765\u95f4\u63a5\u6c42\u89e3\u6700\u5c11\u64cd\u4f5c\u6b21\u6570\u3002
\n\u5728\u5f00\u59cb\u4e4b\u524d，\u5efa\u8bae\u4f60\u5148： <\/p>\n","protected":false},"author":2,"featured_media":94959,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[10187,55,2692,1813,5148,427],"topic":[],"class_list":["post-94963","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-codingplan","tag-c","tag-leetcode","tag-1813","tag-5148","tag-427"],"yoast_head":"\n
LeetCode 1658\uff1a\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\uff08\u6ed1\u52a8\u7a97\u53e3\uff09 \u2014\u2014 \u9898\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/94963.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LeetCode 1658\uff1a\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\uff08\u6ed1\u52a8\u7a97\u53e3\uff09 \u2014\u2014 \u9898\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"👋 \u6b22\u8fce\u9605\u8bfb \u4e00.\u9898\u76ee 1658. \u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570 - \u529b\u6263（LeetCode） \u200b 🎯 \u6b22\u8fce\u6765\u5230\u300c\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\u300d\u9898\u89e3\u4e4b\u65c5！\u00a0\u672c\u6587\u5c06\u5e26\u4f60\u4ece\u201c\u4ece\u6570\u7ec4\u4e24\u7aef\u79fb\u9664\u5143\u7d20\u4f7f\u603b\u548c\u6070\u597d\u4e3a x\u201d\u8fd9\u4e00\u9006\u5411\u601d\u7ef4\u95ee\u9898\u51fa\u53d1，\u6df1\u5165\u7406\u89e3\u6ed1\u52a8\u7a97\u53e3\u7684\u5de7\u5999\u8f6c\u5316，\u5e76\u638c\u63e1\u5982\u4f55\u901a\u8fc7\u5bfb\u627e\u6700\u957f\u8fde\u7eed\u5b50\u6570\u7ec4\u6765\u95f4\u63a5\u6c42\u89e3\u6700\u5c11\u64cd\u4f5c\u6b21\u6570\u3002 \u5728\u5f00\u59cb\u4e4b\u524d，\u5efa\u8bae\u4f60\u5148：\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/94963.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-15T13:09:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815130923-6a8065032268c.jpg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/94963.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/94963.html\",\"name\":\"LeetCode 1658\uff1a\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\uff08\u6ed1\u52a8\u7a97\u53e3\uff09 \u2014\u2014 \u9898\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-08-15T13:09:32+00:00\",\"dateModified\":\"2026-08-15T13:09:32+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/94963.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/94963.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/94963.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"LeetCode 1658\uff1a\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\uff08\u6ed1\u52a8\u7a97\u53e3\uff09 \u2014\u2014 \u9898\u89e3\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"LeetCode 1658\uff1a\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\uff08\u6ed1\u52a8\u7a97\u53e3\uff09 \u2014\u2014 \u9898\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/94963.html","og_locale":"zh_CN","og_type":"article","og_title":"LeetCode 1658\uff1a\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\uff08\u6ed1\u52a8\u7a97\u53e3\uff09 \u2014\u2014 \u9898\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"👋 \u6b22\u8fce\u9605\u8bfb \u4e00.\u9898\u76ee 1658. \u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570 - \u529b\u6263（LeetCode） \u200b 🎯 \u6b22\u8fce\u6765\u5230\u300c\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\u300d\u9898\u89e3\u4e4b\u65c5！\u00a0\u672c\u6587\u5c06\u5e26\u4f60\u4ece\u201c\u4ece\u6570\u7ec4\u4e24\u7aef\u79fb\u9664\u5143\u7d20\u4f7f\u603b\u548c\u6070\u597d\u4e3a x\u201d\u8fd9\u4e00\u9006\u5411\u601d\u7ef4\u95ee\u9898\u51fa\u53d1，\u6df1\u5165\u7406\u89e3\u6ed1\u52a8\u7a97\u53e3\u7684\u5de7\u5999\u8f6c\u5316，\u5e76\u638c\u63e1\u5982\u4f55\u901a\u8fc7\u5bfb\u627e\u6700\u957f\u8fde\u7eed\u5b50\u6570\u7ec4\u6765\u95f4\u63a5\u6c42\u89e3\u6700\u5c11\u64cd\u4f5c\u6b21\u6570\u3002 \u5728\u5f00\u59cb\u4e4b\u524d，\u5efa\u8bae\u4f60\u5148：","og_url":"https:\/\/www.wsisp.com\/helps\/94963.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-08-15T13:09:32+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815130923-6a8065032268c.jpg"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"5 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/94963.html","url":"https:\/\/www.wsisp.com\/helps\/94963.html","name":"LeetCode 1658\uff1a\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\uff08\u6ed1\u52a8\u7a97\u53e3\uff09 \u2014\u2014 \u9898\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-08-15T13:09:32+00:00","dateModified":"2026-08-15T13:09:32+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/94963.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/94963.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/94963.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"LeetCode 1658\uff1a\u5c06 x \u51cf\u5230 0 \u7684\u6700\u5c0f\u64cd\u4f5c\u6570\uff08\u6ed1\u52a8\u7a97\u53e3\uff09 \u2014\u2014 \u9898\u89e3"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/94963","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=94963"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/94963\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/94959"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=94963"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=94963"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=94963"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=94963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815130923-6a8065032268c.jpg\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815130923-6a8065035d4bf.png\")
\u200b<\/p>\n