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题目：

题解：

int cmp(const void* _a, const void* _b) {int *a = *(int**)_a, *b = *(int**)_b;return a[0] == b[0] ? a[1] - b[1] : b[0] - a[0];
}int** reconstructQueue(int** people, int peopleSize, int* peopleColSize, int* returnSize, int** returnColumnSizes) {qsort(people, peopleSize, sizeof(int*), cmp);int** ans = malloc(sizeof(int*) * peopleSize);*returnSize = 0;*returnColumnSizes = malloc(sizeof(int) * peopleSize);for (int i = 0; i < peopleSize; i++) {(*returnColumnSizes)[i] = 2;}for (int i = 0; i < peopleSize; ++i) {int* person = people[i];(*returnSize)++;for (int j = (*returnSize) - 1; j > person[1]; j--) {ans[j] = ans[j - 1];}int* tmp = malloc(sizeof(int) * 2);tmp[0] = person[0], tmp[1] = person[1];ans[person[1]] = tmp;}return ans;
}