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Find all permutations of a string

 Ex:- Permutations of string "abc" are 

        "abc"  "acb"  "bac"  "bca"  "cab"  "cba" 

Java

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 public class StrPermutation{
     public static void main(String []args){
        String str = "abc";
        permute(str,"");
     }
     public static void permute(String str, String ans){
         if(str.length()==0){
             System.out.print(ans+" ");
             return;
         }
         for(int i=0; i<str.length(); i++){
             char ch = str.charAt(i);
             String rem = str.substring(0,i) + str.substring(i+1);
             permute(rem, ans+ch);
         }
     }
 }

Python

def permute(str, ans):
    if len(str)==0:
        print(ans, end=" ")
        return
    for i in range(0,len(str)):
        rem = str[0:i] + str[i+1:]
        permute(rem, ans+str[i])

input_str = "abc"
permute(input_str,"")

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