Update and rename NeedleInHayStack.cpp to easy-28-index_of_first_occurrence_in_string.cpp

Author: matthewgoembel

Codes/NeedleInHayStack.cpp renamed to Codes/easy-28-index_of_first_occurrence_in_string.cpp

@@ -1,3 +1,22 @@
+// You are given two strings needle and haystack.
+// Return the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.
+
+ 
+
+// Example 1:
+
+// Input: haystack = "sadbutsad", needle = "sad"
+// Output: 0
+// Explanation: "sad" occurs at index 0 and 6.
+// The first occurrence is at index 0, so we return 0.
+
+// Example 2:
+
+// Input: haystack = "leetcode", needle = "leeto"
+// Output: -1
+// Explanation: "leeto" did not occur in "leetcode", so we return -1.
+
+
 class Solution {
 public:
     int strStr(string haystack, string needle) {