Updated link

kanahaiya · kanahaiya · commit 6cd02bbbb4ca · 2018-04-02T00:29:08.000+05:30
diff --git a/README.md b/README.md
@@ -50,7 +50,7 @@ Coding environment used- Windows 8.1, Eclipse Oxygen, JAVA 8
 |   303   | Dynamic Programming | [Range Sum Query - Immutable](https://leetcode.com/problems/range-sum-query-immutable/description/)                          							 | [Solution.java](https://github.com/Java-aid/LeetCodeSolutions/blob/master/LeetCodeSolutions/EasyLevelSolutions/src/main/java/com/javaaid/solutions/easy/dp/RangeSumQueryImmutable.java)                                                          	   						|   Easy		 |
 |   70    | Dynamic Programming | [Climbing Stairs](https://leetcode.com/problems/climbing-stairs/description/)                          										   		 | [Solution.java](https://github.com/Java-aid/LeetCodeSolutions/blob/master/LeetCodeSolutions/EasyLevelSolutions/src/main/java/com/javaaid/solutions/easy/dp/ClimbingStairs.java)                                                                  							|   Easy		 |
 |   26    |    Two Pointers  	| [Remove Duplicates from Sorted Array](https://leetcode.com/problems/remove-duplicates-from-sorted-array)                                               | [Solution.java](https://github.com/Java-aid/LeetCodeSolutions/blob/master/LeetCodeSolutions/EasyLevelSolutions/src/main/java/com/javaaid/solutions/easy/twopointers/RemoveDuplicatesFromSortedArray.java)                                        	             		    |   Easy		 |
-|   76    |    Two Pointers  	| [Minimum Window Substring](https://leetcode.com/problems/minimum-window-substring/description/)                                               		 | [Solution.java](https://github.com/Java-aid/LeetCodeSolutions/blob/master/LeetCodeSolutions/EasyLevelSolutions/src/main/java/com/javaaid/solutions/hard/twopointers/MinimumWindowSubstring.java)                                        	             		  				|   Hard		 |
+|   76    |    Two Pointers  	| [Minimum Window Substring](https://leetcode.com/problems/minimum-window-substring/description/)                                               		 | [Solution.java](https://github.com/Java-aid/LeetCodeSolutions/blob/master/LeetCodeSolutions/HardLevelSolutions/src/main/java/com/javaaid/solutions/hard/twopointers/MinimumWindowSubstring.java)                                        	             		  				|   Hard		 |
 |   728   |  	   Math  		| [Self Dividing Numbers](https://leetcode.com/problems/self-dividing-numbers/description/)                          									 | [Solution.java](https://github.com/Java-aid/LeetCodeSolutions/blob/master/LeetCodeSolutions/EasyLevelSolutions/src/main/java/com/javaaid/solutions/easy/maths/SelfDividingNumbers.java)                                                          	   						|   Easy		 |
 |   595   |  	   SQL  		| [Big Countries](https://leetcode.com/problems/big-countries/description/)                          										   			 | [Solution.sql](https://github.com/Java-aid/LeetCodeSolutions/blob/master/LeetCodeSolutions/EasyLevelSolutions/src/main/resources/sqls/BigCountries.sql)                                                                  													|   Easy		 |
 |   627   |  	   SQL  		| [Swap Salary](https://leetcode.com/problems/big-countries/description/)                          										   			 	 | [Solution.sql](https://github.com/Java-aid/LeetCodeSolutions/blob/master/LeetCodeSolutions/EasyLevelSolutions/src/main/resources/sqls/SwapSalary.sql)                                                                  														|   Easy		 |
