Time: 7 ms, Memory: 10 MB - LeetHub

ArbitCode · Dec 17, 2022 · 89357b2 · 89357b2
1 parent ecf6809
commit 89357b2
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/check-if-n-and-its-double-exist/check-if-n-and-its-double-exist.cpp b/check-if-n-and-its-double-exist/check-if-n-and-its-double-exist.cpp
@@ -0,0 +1,17 @@
+class Solution {
+public:
+    int getExistIndex(vector<int>& arr, int element){
+        for(int i = 0; i < arr.size(); i++){
+            if(arr[i] == element) return i;
+        }
+        return -1;
+    }
+    bool checkIfExist(vector<int>& arr) {
+        for(int i = 0; i < arr.size(); i++){
+            int j = getExistIndex(arr, arr[i]*2);
+            if(i!=j && j >= 0) return true;
+        }
+        return false;
+
+    }
+};