LeetCode 15.
```java class Solution { public List<List> threeSum(int[] nums) { Arrays.sort(nums); //nlogn List<List> result = new ArrayLis...
LeetCode 11.
Question ``` Given a 1-indexed array of integers numbers that is already sorted in non-decreasing order, find two numbers such that they add up to a specifi...
LeetCode 167.
Question ``` Given a 1-indexed array of integers numbers that is already sorted in non-decreasing order, find two numbers such that they add up to a specifi...
LeetCode 28.
Complexity Time complexity: O(n)
LeetCode 6.
Complexity Time complexity: O(n)