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JavaScript: Check whether the last digit of the three given positive integers is same

JavaScript Basic: Exercise-36 with Solution

Write a JavaScript program to check whether the last digit of the three given positive integers is same.

Pictorial Presentation:

JavaScript: Check whether the last digit of the three given positive integers is same

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to check whether the last digit of the three given positive integers is same.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function last_digit(x, y, z)
{
  if ((x > 0) && y > 0 && z > 0)
    {
     return (x % 10 == y % 10 && y % 10 == z % 10 && x % 10 == z % 10);
   }
  else
    return false;
}

console.log(last_digit(20, 30, 400));
console.log(last_digit(-20, 30, 400));
console.log(last_digit(20, -30, 400));
console.log(last_digit(20, 30, -400));

Sample Output:

true
false
false
false

Flowchart:

Flowchart: JavaScript - Check whether the last digit of the three given positive integers is same

ES6 Version:

function last_digit(x, y, z)
{
  if ((x > 0) && y > 0 && z > 0)
    {
     return (x % 10 == y % 10 && y % 10 == z % 10 && x % 10 == z % 10);
   }
  else
    return false;
}

console.log(last_digit(20, 30, 400));
console.log(last_digit(-20, 30, 400));
console.log(last_digit(20, -30, 400));
console.log(last_digit(20, 30, -400));

Live Demo:

See the Pen JavaScript: check whether the last digit of the three given positive integers is same - basic-ex-36 by w3resource (@w3resource) on CodePen.


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Next: Write a JavaScript program to create a new string with first 3 characters are in lower case from a given string.

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JavaScript: Tips of the Day

Returns the sum of the powers of all the numbers from start to end (both inclusive)

Example:

const sumPower = (end, power = 2, start = 1) =>
  Array(end + 1 - start)
    .fill(0)
    .map((x, i) => (i + start) ** power)
    .reduce((a, b) => a + b, 0);
console.log(sumPower(10)); // 385
console.log(sumPower(10, 3)); // 3025
console.log(sumPower(10, 3, 5)); // 2925

Output:

385
3025
2925