jieli4970的博客

题目： Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not use th

题目：There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). Example 1: nums1 = [1,

class Solution {     public boolean isNumber(String s) {         //String test=s;         //String test="   +11111.e+1   ";          String re_rest=s;         String test=re_rest.replace("-","+