Update 0015-3sum.java

File(s) Modified: 0015-3sum.java
Language(s) Used: Java
Submission URL: https://leetcode.com/problems/3sum/submissions/1074841189/

Description: Only added comment to code that helps understand it better

Author: Adishar93

Diff for: java/0015-3sum.java

@@ -6,6 +6,7 @@ public List<List<Integer>> threeSum(int[] nums) {
         LinkedList<List<Integer>> sol = new LinkedList<List<Integer>>();
 
         for (int i = 0; i < nums.length - 2; i++) {
+            //Only consider non-duplicate elements for i
             if (i == 0 || (i > 0 && nums[i] != nums[i - 1])) {
                 int target = 0 - nums[i];
                 int left = i + 1;