diff --git a/src/basicConcept/algorithm/binarySearch.kt b/src/basicConcept/algorithm/binarySearch.kt
new file mode 100644
index 0000000..c7ccf40
--- /dev/null
+++ b/src/basicConcept/algorithm/binarySearch.kt
@@ -0,0 +1,17 @@
+fun binarySearch(e:Int,arr:IntArray):Int{
+    
+    var low=0
+    var high=arr.size-1
+    
+    while(low<=high){
+        val mid=low+(high-low)/2
+        
+        if(arr[mid]>e){
+            high=mid-1
+        }else if(arr[mid]<e){
+            low=mid+1
+        }else return mid
+    }
+    
+    return -1
+}
\ No newline at end of file