Merge pull request #2 from Shubham2816/newcodes

hactoberfest-2022 solution binary search leetcode

Author: kishanrajput23

704.BinarySearch/.cpp

@@ -0,0 +1,13 @@
+class Solution {
+public:
+    int search(vector<int>& a, int k) {
+        int low = 0, high = a.size() - 1, mid;
+        while(low <= high){
+            mid = (low + high) / 2;
+            if(a[mid] == k)return mid;
+            else if(a[mid] > k)high = mid - 1;
+            else low = mid + 1;
+        }
+        return -1;
+    }
+};