Question

Write a Program in Java to input a number and check whether it is an Evil Number or not. An Evil number is a positive whole number which has even number of 1’s in its binary equivalent.

Answer 1

Ok so first let me tell you what's an Evil number is U can skip this if you know what is an Evil number.

Evil Number : An Evil number is a positive whole number which has even number of 1’s in its binary equivalent.

And now I'll give you an example to your question.....
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 NUMBER

Example 2
INPUT : 26
BINARY EQUIVALENT : 11010
NO. OF 1’s : 3
OUTPUT : NOT AN EVIL NUMBER


HAPPY PROGRAMMING !
(No one is happy doing programming XD :p)

Answer 2

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$\huge {GOOD... MORNING}}$

❇${\mathbb{CORRECT...ANSWER}}$

✔

❇${\mathbb{EVIL NUMBER}}$ - An Evil number is a positive whole number which has even number of 1’s in its binary equivalent.

❇${\mathbb{EXAMPLE}}$ - Binary equivalent of 9 is 1001 which contains even number of 1’s.

A few evil numbers are 3, 5, 6, 9….


Example 1
INPUT : 15
BINARY EQUIVALENT : 1111
NO. OF 1’s : 4
OUTPUT : EVIL NUMBER

Example 2
INPUT : 26
BINARY EQUIVALENT : 11010
NO. OF 1’s : 3
OUTPUT : NOT AN EVIL NUMBER



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