add question 28

Author: rishabh1403

1-100/28-implement-strstr.js

@@ -1,8 +1,10 @@
 /**
- * @param {string} haystack
- * @param {string} needle
- * @return {number}
+ Author :- Rishabh Jain 
+Solution for :- https://leetcode.com/problems/implement-strstr/
+blog for this code :- https://rishabh1403.com/posts/coding/leetcode/2020/03/leetcode-implement-strstr
+youtube video :- https://youtu.be/pKa_2pLb3Rw
  */
+
 var strStr = function (haystack, needle) {
   if (needle.length === 0) {
     return 0;
@@ -14,7 +16,7 @@ var strStr = function (haystack, needle) {
   for (let i = 0; i <= haystackLength - needleLength; i++) {
     let flag = true;
 
-    for (let j = i, k = 0; j < needleLength + i, k < needleLength; j++ , k++) {
+    for (let j = i, k = 0; j < needleLength + i, k < needleLength; j++, k++) {
       if (haystack[j] !== needle[k]) {
         flag = false;
         break;
@@ -48,5 +50,6 @@ var strStr = function (haystack, needle) {
 };
 
 //////////////////////////////
-KMP 
-Robin karp
+// Other Algos that can be used
+// KMP 
+// Robin karp

README.md

@@ -16,6 +16,8 @@ Solutions of all the questions from Leetcode in JavaScript.
 
 - 20.Valid Parentheses - [Question](https://leetcode.com/problems/valid-parentheses/) | [Source Code](https://github.com/rishabh1403/leetcode-javascript-solutions/blob/master/1-100/20-valid-parentheses.js) | [Blog](https://rishabh1403.com/leetcode-solution-of-valid-parentheses-in-javascript)
 
+- 28.Implement strStr() - [Question](https://leetcode.com/problems/implement-strstr/) | [Source Code](https://github.com/rishabh1403/leetcode-javascript-solutions/blob/master/1-100/28-implement-strstr.js) | [Blog](https://rishabh1403.com/posts/coding/leetcode/2020/03/leetcode-implement-strstr) | [Youtube Video](https://youtu.be/pKa_2pLb3Rw)
+
 - 35.Search Insert Position - [Question](https://leetcode.com/problems/search-insert-position/) | [Source Code](https://github.com/rishabh1403/leetcode-javascript-solutions/blob/master/1-100/35-search-insert-position.js) | [Blog](https://rishabh1403.com/posts/coding/leetcode/2020/03/leetcode-search-insert-position) | [Youtube Video](https://youtu.be/l2XPvyTlC6c)
 
 - 58.Length of Last Word - [Question](https://leetcode.com/problems/length-of-last-word/) | [Source Code](https://github.com/rishabh1403/leetcode-javascript-solutions/blob/master/1-100/58-length-of-last-word.js) | [Blog](https://rishabh1403.com/posts/coding/leetcode/2020/03/leetcode-length-of-last-word) | [Youtube Video](https://youtu.be/2PQ4vtnLfnw)