leetcodeoj-1 two sum

Directly loop across the array(vector)

Language: C++

class Solution {
public:
    vector<int> twoSum(vector<int>& nums, int target) {
        vector<int> ans;
        for(int i=0;i<nums.size();++i){
            for(int j=i+1;j<nums.size();++j){
                if(nums[i] + nums[j] == target){
                    ans.push_back(i);
                    ans.push_back(j);
                    return ans;
                }
            }
        }
        return ans;
    }
};

Language: Java

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