題目：

題解：

int** generate(int numRows, int* returnSize, int** returnColumnSizes) {int** ret = malloc(sizeof(int*) * numRows);*returnSize = numRows;*returnColumnSizes = malloc(sizeof(int) * numRows);for (int i = 0; i < numRows; ++i) {ret[i] = malloc(sizeof(int) * (i + 1));(*returnColumnSizes)[i] = i + 1;ret[i][0] = ret[i][i] = 1;for (int j = 1; j < i; ++j) {ret[i][j] = ret[i - 1][j] + ret[i - 1][j - 1];}}return ret;
}