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3 years ago

You will be given a string, containing both uppercase and lowercase alphabets(numbers are not allowed).

Computers and Technology

1 answer:

murzikaleks [220]3 years ago

6 0

Answer:

The Java code is given below with appropriate comments

Explanation:

import java.util.*;

class Main {

static Set<String> set = new HashSet();

static void printPerms(char ch[], int ind){

//If end of string is reached, add it to set

if(ind==ch.length){

set.add(new String(ch));

return;

}

for(int i=ind;i<ch.length;i++){

//Only swap if lower case

if((ch[i]>='a' && ch[i]<='z')&&((ch[ind]>='a' && ch[ind]<='z'))){

char t = ch[i];

ch[i] = ch[ind];

ch[ind] = t;

}

printPerms(ch,ind+1);

if((ch[i]>='a' && ch[i]<='z')&&((ch[ind]>='a' && ch[ind]<='z'))){

char t = ch[i];

ch[i] = ch[ind];

ch[ind] = t;

}

public static void main(String[] args) {

printPerms("aBbCc".toCharArray(),0);

System.out.println(set);

}

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