C语言 | Leetcode C语言题解之第442题数组中重复的数据
题目：
题解：
int* findDuplicates(int* nums, int numsSize, int* returnSize) { int *ans = (int *)malloc(sizeof(int) * numsSize);int pos = 0;for (int i = 0; i < numsSize; ++i) {int x = abs(nums[i]);if (nums[x - 1] > 0) {nums[x - 1] = -nums[x - 1];} else {ans[pos++] = x;}}*returnSize = pos;return ans;
}