diff --git a/Traping rain water leetcode . cpp b/Traping rain water leetcode . cpp
new file mode 100644
index 0000000..c903acf
--- /dev/null
+++ b/Traping rain water leetcode . cpp	
@@ -0,0 +1,25 @@
+class Solution {
+public:
+    int trap(vector<int>& height) {
+        int n = height.size();
+        int res = 0;
+        int left[n];
+         int right[n];
+        
+     left[0] = height[0];
+    for(int i = 1;i<n;i++){
+        left[i] = max(left[i-1],height[i]);
+    }
+    right[n-1] = height[n-1];
+    for(int i = n-2;i>=0;i--){
+        right[i] = max(right[i+1],height[i]);
+    }
+    for(int i = 1;i < n-1;i++){
+        int val = min(left[i-1],right[i+1]);
+        if(val>height[i])
+            res += val-height[i];
+    }
+    return res;
+    }
+};
+