2.Two Sum

題目

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 the same element twice.

Example 1:

Given nums = [2, 7, 11, 15], target = 9,

Because nums[0] + nums[1] = 2 + 7 = 9,
return [0, 1].

解法一：暴力解法

class Solution {
    public int[] twoSum(int[] nums, int target) {
        int result [] =new int [2];
          for(int i=0;i<nums.length;i++){
              for(int j=i+1;j<nums.length;j++){
                  if(target==nums[i]+nums[j]){
                      result [0] = i;
                      result [1] = j;
                  }
                     
              }
          }
          return result;
    
    }
}