PROGRAM TO PRINT ALL POSSIBLE COMBINATIONS OF A FOUR LETTERED STRING

PROGRAM-1

PROGRAM TO PRINT ALL POSSIBLE COMBINATIONS OF A

FOUR LETTERED STRING

ALGORITHM

Step-1 Start

Step-2 Enter the string and store it in‘s’

Step-3 Store the length of the string in ‘l’

Step-4 Take three loops

            1^st loop- for (a=0; a<l;a++)

            2^nd loop-for (b=0; b<l;b++)

            3^rd loop -for(c=0; c<l;c++)

Step-5 If a,b and c are not equal then add them ,subtract them from 6 and store the result in ‘d’

Step-6 Add all the characters of‘s’ at locations a,b,c,d and store it ‘w’

Step-7 Print ‘w’

Step-8 Exit

PROGRAM

import java.io.*;

class combinations

{

public static void main()throws IOException

{

int l,a,b,c,d;

char r,t,u,v;

String w="",s="";

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("ENTER A 4 LETTERED STRING");

s=br.readLine();

l=s.length();

System.out.println ("COMBINATIONS ARE");

for(a=0;a<l;a++)

{

for (b=0;b<l;b++)

{

for (c=0;c<l;c++)

{

if (a!=b&&b!=c&&c!=a)

{

d=6-(a+b+c);

r=s.charAt(a);

t=s.charAt(b);

u=s.charAt(c);

v=s.charAt(d);

w=r+""+t+""+u+""+v;

System.out.println (w);

}

w="";}}}}}

VARIABLE DESCRIPTION-

VARIABLE USED	DATATYPE	DESCRIPTION
l	Integer type	For storing the length.
a,b,c	Integer type	Used for running different loops for combinations.
r,t,u,v	Character type	Used for storing different characters.
s	String type	Used for storing the entered string.
w	String type	Used for storing combinations.

INPUT/OUTPUT-

INPUT	OUTPUT
ENTER A 4 LETTERED STRING COMP	COMBINATIONS ARE COMP COPM CMOP CMPO CPOM CPMO OCMP OCPM OMCP OMPC OPCM OPMC MCOP MCPO MOCP MOPC MPCO MPOC PCOM PCMO POCM POMC PMCO       PMOC