Added a permutation program

garima1820 · web-flow · commit c95a9ae96f2b · 2020-10-07T18:26:58.000+05:30
diff --git a/Permutation.java b/Permutation.java
@@ -0,0 +1,22 @@
+/* This code will find all permutations of a given string
+Recursion is used here*/
+import java.util.ArrayList;
+
+public class Permutation1 {
+public static void main(String[] args) {
+   printPer("1234","");
+}
+
+//this method will find all permutations
+   public static void printPer(String ques,String ans){
+       if(ques.length()==0){
+           System.out.println(ans);
+           return;
+       }
+       for(int i=0;i<ques.length();i++){
+            char c=ques.charAt(i); 
+            String ros=ques.substring(0,i)+ques.substring(i+1);
+                  printPer(ros,ans+c);
+       }
+   } 
+}
