Handles all corner cases

Searches/Perfect BinarySearch

@@ -0,0 +1,21 @@
+ static int binarySearch(int[] arr, int target) {
+        int low = 0 ;
+        int high = arr.length - 1 ;
+
+        while(low <= high) {
+            int mid =(low + high) / 2;
+
+            if(arr[mid] == target) {
+                return mid;
+            }
+            else if(arr[mid] > target) {
+                high = mid - 1;
+            }
+            else {
+                low = mid + 1;
+            }
+
+        }
+        return -1;
+    }
+