Computer Science
A number is said to Bouncy number if the digits of the number are unsorted.
For example,
22344 - It is not a Bouncy number because the digits are sorted in ascending order.
774410 - It is not a Bouncy number because the digits are sorted in descending order.
155349 - It is a Bouncy number because the digits are unsorted.
A number below 100 can never be a Bouncy number.
Write a program in java to accept a number. Check and display whether it is a Bouncy number or not.
Java
Java Iterative Stmts
61 Likes
Answer
import java.util.Scanner;
public class KboatBouncyNumber
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.print("Enter a number: ");
int n = in.nextInt();
if (n < 100) {
System.out.println(n + " is not a Bouncy Number.");
return;
}
int t = n;
boolean isIncreasing = true, isDecreasing = true;
int prev = t % 10;
while (t != 0) {
int d = t % 10;
if (d > prev) {
isIncreasing = false;
break;
}
prev = d;
t /= 10;
}
t = n;
prev = t % 10;
while (t != 0) {
int d = t % 10;
if (d < prev) {
isDecreasing = false;
break;
}
prev = d;
t /= 10;
}
if (!isIncreasing && !isDecreasing)
System.out.println(n + " is a Bouncy Number.");
else
System.out.println(n + " is not a Bouncy Number.");
}
}
Output
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Let's understand the concept of Fascinating Number through the following example:
Consider the number 192
192 x 1 = 192
192 x 2 = 384
192 x 3 = 576
Concatenating the results: 192 384 576
It could be observed that '192384576' consists of all digits from 1 to 9 exactly once. Hence, it could be concluded that 192 is a Fascinating Number. Some examples of fascinating Numbers are: 192, 219, 273, 327, 1902, 1920, 2019 etc.An Evil number is a positive whole number which has even number of 1's in its binary equivalent. Example: Binary equivalent of 9 is 1001, which contains even number of 1's. A few evil numbers are 3, 5, 6, 9…. Design a program to accept a positive whole number and find the binary equivalent of the number and count the number of 1's in it and display whether it is a Evil number or not with an appropriate message. Output the result in format given below:
Example 1
Input: 15
Binary Equivalent: 1111
No. of 1's: 4
Output: Evil NumberExample 2
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No. of 1's: 3
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Example 1 Example 2 Input:
M = 100
N = 11Input:
M = 1500
N = 25Output:
The required number = 119
Total number of digits = 3Output:
The required number = 1699
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M = 99
N = 11Input:
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N = 130Output:
Invalid InputOutput:
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The first few Pronic numbers are:
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