Problem Given a binary tree, return the level order traversal of its nodes’ values. (ie, from left to right, level by level). Example Given binary tree [3,9,20,null,null,15,7], return its level or
void Find(int arr[3][3], int *x, int *y, int key){int m = 0;int n = *y - 1; //和右上角的值作比较while (x < *x&&y >= 0){if (arr[m][n] < key){m++;}else if (arr[m][n]>key){n--;}else if (arr[m][n]==key){*x =