Create Reverse_Array.java

Author: py3-coder

Recursion/Reverse_Array.java

@@ -0,0 +1,37 @@
+//Recursion Revison :)
+// Reverse Array :-
+import java.util.*;
+
+public class Main
+{
+	public static void main(String[] args) {
+		//System.out.println("Hello World");
+		int[] arr = new int[]{3,4,7,8,2};
+		reverseArr(0,arr);
+		
+		for(int ele : arr){
+		   System.out.print(ele+" "); 
+		}
+		
+	}
+	
+	public static void reverseArr(int indx ,int[] arr){
+	    //Base Case::
+	    if(indx==arr.length){
+	        return;
+	    }
+	    int ele = arr[indx];
+	    //Hypothese
+	    reverseArr(indx+1,arr);
+	    insert(ele,indx,arr);
+	}
+	
+	public static void insert(int ele,int indx,int[] arr){
+	    if(indx<0){
+	        return;
+	    }
+	    arr[arr.length-(indx+1)] = ele;
+	    return ;
+	    
+	}
+}