Question

WAP in JAVA to check whether a number is unique number or not

A unique number has no repeatation of digits

Eg : 4056 is unique , 50905 is not unique

Answer 1

$\huge{\textsf{\underline{CODE}}}$

import java.util.*;

class unique_number

{

public static void main(String args[ ])

{

Scanner sc=new Scanner(System.in);

System.out.println("Enter a number to check whether it is unique number or not");

int n=sc.nextInt();

int cpy=n;

int d=0;

int c=0;

int flag=0;

for(int i=0;i<=9;i++)

{

n=cpy;

c=0;

while(n>0)

{

d=n%10;                

if(d==i)

{

   c++;

}

n=n/10;

}

if(c>1)

{

flag=1;

break;

}

}

if(flag==0)

{

System.out.println("Unique number");

}

else

{

System.out.println("Not a unique number");

}

}

}

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OUTPUT :

Enter a number to check whether it is unique number or not

689021

Unique number

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Hope it helps :-)

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Answer 2

import Java. io. *;
class h;
{
public static void main(String args[])throws Exceptions
{
int n,r,m,s=0,f=0,i;
DataInputStream in=new DataInputStream(System.in);
System. out. println("Enter any number");
n=Integer.parseInt(in.readLine());
m=n;
for(i=0;i<=9;i++)
{
while(m>0)
{
r=m%10;
m=m/10;
if(r==1)
s±±;
}
if(s>1)
{
System. out. println("Not a unique number");
break;
}
else
f=1;
}
if(f==1)
System. out.println("Unique number ");
}
}

Hope it helps (｡’▽’｡)♡