rename files

Author: rong-kai

Week_01/id_13/threeSum.js renamed to Week_01/id_13/LeetCode_15_013.js

@@ -1,6 +1,7 @@
 /**
  * @param {number[]} nums
  * @return {number[][]}
+ * https://leetcode.com/problems/3sum/
  */
 
 var threeSum = function(nums) { 

Week_01/id_13/rotate.js renamed to Week_01/id_13/LeetCode_189_013.js

@@ -1,3 +1,5 @@
+//https://leetcode.com/problems/rotate-array/
+
 var rotate = function(nums, k) {
     if(nums.length<2) return nums;
     if(k>0)

Week_01/id_13/swapPairs.js renamed to Week_01/id_13/LeetCode_24_013.js

@@ -1,3 +1,5 @@
+//https://leetcode.com/problems/swap-nodes-in-pairs/
+
 var swapPairs = function(head) {
     if(!head || !head.next) return head;
     let dummy = new ListNode(0);

Week_01/id_13/removeDuplicates.js renamed to Week_01/id_13/LeetCode_26_013.js

@@ -1,6 +1,7 @@
 /**
  * @param {number[]} nums
  * @return {number}
+ * https://leetcode.com/problems/remove-duplicates-from-sorted-array/
  */
 var removeDuplicates = function(nums) {
     if(nums.length==0) return nums;
@@ -11,9 +12,7 @@ var removeDuplicates = function(nums) {
              start++;
              nums[start] = nums[index]; 
          } 
-    }  
-     
-     //return nums ;
+    }   
     return start;
 
 };

Week_01/id_13/trap.js renamed to Week_01/id_13/LeetCode_42_013.js

@@ -1,6 +1,7 @@
 /**
  * @param {number[]} height
  * @return {number}
+ * https://leetcode.com/problems/trapping-rain-water/
  */
 var trap = function(height) {
     if (height.length<2) return 0; 

Week_01/id_13/groupAnagrams.js renamed to Week_01/id_13/LeetCode_49_013.js

@@ -1,6 +1,7 @@
 /**
  * @param {string[]} strs
  * @return {string[][]}
+ * https://leetcode.com/problems/group-anagrams/
  */
 var groupAnagrams = function(strs) { 
     let res = {};

Week_01/id_13/myPow.js renamed to Week_01/id_13/LeetCode_50_013.js

@@ -2,6 +2,7 @@
  * @param {number} x
  * @param {number} n
  * @return {number}
+ * https://leetcode.com/problems/powx-n/
  */ 
 
 var myPow = function(x, n) {