Given a number, the task is to check if number is divisible by 20. The input number may be large and it may not be possible to store long long int and it may be very large number then we use the string.
Examples:
Input : 7575680
Output : Yes
Input : 987985865687690
Output : No
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A number is divisible by 20 if it is divisible by 5 and 4. We can check if a number is divisible by 4 by checking if last two digits are divisible by 4. We can check for divisibility by 5 by checking last digit. Also, if the last digit of a number is zero and the second last digit is a multiple of 2 then the number is divisible by 20.
C++
#include <iostream>
using namespace std;
bool divisibleBy20(string num)
{
int lastTwoDigits = stoi(num.substr(num.length() - 2,
num.length() - 1));
return ((lastTwoDigits % 5 == 0) &&
(lastTwoDigits % 4 == 0));
}
int main()
{
string num = "63284689320";
if (divisibleBy20(num))
cout << "Yes" << endl;
else
cout << "No" << endl;
return 0;
}
|
Java
import java.io.*;
class GFG {
static Boolean divisibleBy20(String num)
{
int lastTwoDigits = Integer.parseInt(num.substring(num.length() - 2,
num.length() ));
return ((lastTwoDigits % 5 == 0) &&
(lastTwoDigits % 4 == 0));
}
public static void main (String[] args)
{
String num = "63284689320";
if (divisibleBy20(num) == true)
System.out.println("Yes");
else
System.out.println("No");
}
}
|
Python3
import math
def divisibleBy20(num):
lastTwoDigits = int(num[-2:])
return ((lastTwoDigits % 5 == 0 and
lastTwoDigits % 4 == 0))
num = "63284689320"
if (divisibleBy20(num) == True):
print("Yes")
else:
print("No")
|
C#
using System;
using System.Text;
class GFG
{
static bool divisibleBy20(String num)
{
int lastTwoDigits = Int32.Parse(num.Substring(2));
return ((lastTwoDigits % 5 == 0) &&
(lastTwoDigits % 4 == 0));
}
static public void Main ()
{
String num = "63284689320";
if (divisibleBy20(num) == true)
Console.Write("Yes");
else
Console.Write("No");
}
}
|
PHP
<?php
function divisibleBy20($num)
{
$lastTwoDigits = intval(substr($num,
(strlen($num) - 2), 2));
return (($lastTwoDigits % 5 == 0) &&
($lastTwoDigits % 4 == 0));
}
$num = "63284689320";
if (divisibleBy20($num))
echo "Yes";
else
echo "No";
?>
|
Javascript
<script>
function divisibleBy20(num)
{
let lastTwoDigits = parseInt(num.slice(-2, num.length))
console.log(num.slice(-2, 1))
return ((lastTwoDigits % 5 == 0) &&
(lastTwoDigits % 4 == 0))
}
let num = "63284689320";
if (divisibleBy20(num))
document.write("Yes");
else
document.write("No");
</script>
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