Create Revere array.cpp

Author: sanyathisside

GeeksForGeeks/Array/Revere array.cpp

@@ -0,0 +1,57 @@
+// using stl (M-1)
+#include <bits/stdc++.h>
+using namespace std;
+
+int main(){
+    int n;
+    cin>>n;
+    int arr[n];
+    for(int i=0; i<n; i++) cin>>arr[i];
+    reverse(arr,arr+n);
+    for(int i=0; i<n; i++) cout<<arr[i]" ";
+}
+
+//Iterative way (M-2)
+#include <bits/stdc++.h>
+using namespace std;
+
+void reverse(int arr[], int n){
+    int start=0;
+    int end=n-1;
+    while(start<=end){
+        swap(arr[start],arr[end]);
+        start++;
+        end--;
+    }
+    for(int i=0; i<n; i++) cout<<arr[n]<<" ";
+}
+
+int main(){
+    int n;
+    cin>>n;
+    int arr[n];
+    for(int i=0; i<n; i++) cin>>arr[i];
+    reverse(arr,n);
+}
+
+// Recursive way (M-3)
+#include <bits/stdc++.h>
+using namespace std;
+
+void reverse(int arr[], int n, int start, int end){
+    while(start<=end){
+        swap(arr[start],arr[end]);
+        start++;
+        end--;
+        reverse(arr,n,start+1,end-1);
+    }
+}
+
+int main(){
+    int n;
+    cin>>n;
+    int arr[n];
+    for(int i=0; i<n; i++) cin>>arr[i];
+    reverse(arr,n,0,n-1);
+    for(int i=0; i<n; i++) cout<<arr[i]<<" ";
+}