738.单调递增的数字 public class Solution {public int MonotoneIncreasingDigits(int n) {string nu=n.ToString();char[] num=nu.ToCharArray();int idx=num.Length;for(int i=num.Length-1;i>0;i--){if(num[i]<num[i-1]
62. 不同路径 public static int uniquePaths(int m, int n) {int[][] path = new int[m][n];for (int i = 0; i < m; i++) {path[i][0] = 1;}for (int i = 0; i < n; i++) {path[0][i] = 1;}for (int i = 1; i < m; i++