Given an array of integers nums
and an integer target
, return indices of the two numbers such that they add up to target
.
You may assume that each input would have exactly one solution, and you may not use the same element twice.
You can return the answer in any order.
Level: Easy
Example 1:
Input: nums = [2,7,11,15], target = 9
Output: [0,1]
Output: Because nums[0] + nums[1] == 9, we return [0, 1].
Example 2:
Input: nums = [3,2,4], target = 6
Output: [1,2]
Example 3:
Input: nums = [3,3], target = 6
Output: [0,1]
Constraints:
2 <= nums.length <= 103
-109 <= nums[i] <= 109
-109 <= target <= 109
- Only one valid answer exists.
Answer
class Solution {
public int[] twoSum(int[] nums, int target) {
if(nums.length <2){
return null;
}
for(int i = 0; i<nums.length-1; i++){
for(int j = i+1 ; j< nums.length; j++){
if(nums[i]+nums[j]==target){
return new int[]{i,j};
}
}
}
return null;
}
}