Write a program in java to ask the user to enter any number and print whether the number is a cyclo no. or not
Answers
Answer:
Java Numbers: Exercise-19 with Solution
Write a Java program to check a number is a cyclic or not.
A cyclic number is an integer in which cyclic permutations of the digits are successive multiples of the number. The most widely known is 142857:
142857 × 1 = 142857
142857 × 2 = 285714
142857 × 3 = 428571
142857 × 4 = 571428
142857 × 5 = 714285
142857 × 6 = 857142
Input Data:
Input a number: 142857
Pictorial Presentation:
Java: Check a number is a cyclic or not.
Sample Solution:
Java Code:
import java.util.Scanner;
import java.math.BigInteger;
public class Example19 {
public static void main( String args[] ){
Scanner sc = new Scanner( System.in );
System.out.print("Input a number: ");
String strnum = sc.nextLine().trim();
BigInteger n = new BigInteger(strnum);
int len = strnum.length()+1;
String str = String.valueOf(len);
BigInteger n1 = new BigInteger(str);
StringBuilder buf = new StringBuilder();
for(int i = 0 ; i < (len-1); i++) {
buf.append('9');
}
BigInteger total = new BigInteger(buf.toString());
if(n.multiply(n1).equals(total)) {
System.out.println("It is a cyclic number.");
}
else {
System.out.println("Not a cyclic number.");
}
}
}
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Sample Output:
Input a number: 142857
It is a cyclic number.
Flowchart:
Answer:
Explanation:
import java.util.Scanner;
import java.math.BigInteger;
public class Example19 {
public static void main( String args[] ){
Scanner sc = new Scanner( System.in );
System.out.print("Input a number: ");
String strnum = sc.nextLine().trim();
BigInteger n = new BigInteger(strnum);
int len = strnum.length()+1;
String str = String.valueOf(len);
BigInteger n1 = new BigInteger(str);
StringBuilder buf = new StringBuilder();
for(int i = 0 ; i < (len-1); i++) {
buf.append('9');
}
BigInteger total = new BigInteger(buf.toString());
if(n.multiply(n1).equals(total)) {
System.out.println("It is a cyclic number.");
}
else {
System.out.println("Not a cyclic number.");
}
}
}
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Sample Output:
Input a number: 142857
It is a cyclic number.