Create 704. Binary Search 1 apr (#135)

Author: Chayandas07

704. Binary Search 1 apr

@@ -0,0 +1,14 @@
+class Solution {
+public:
+    int search(vector<int>& nums, int target) {
+       int s=0,e=nums.size()-1;
+       while(s<=e){
+           int m=(s+e)/2;
+           if(nums[m]==target)return m;
+           else if(nums[m]>target)e=m-1;
+           else s=m+1;
+       }
+       return -1; 
+    }
+    
+};