JavaScript: Check whether all the digits in a given number are the same or not
JavaScript Basic: Exercise-140 with Solution
Write a JavaScript program to check whether all the digits in a given number are the same or not.
Visual Presentation:
Sample Solution:
JavaScript Code:
/**
* Function to test if all digits in the number are the same
* @param {number} num - The input number
* @returns {boolean} - Returns true if all digits are the same, false otherwise
*/
function test_same_digit(num) {
var first = num % 10; // Extracting the last digit as a reference
while (num) {
if (num % 10 !== first) return false; // Checking if the current digit is different from the reference
num = Math.floor(num / 10); // Removing the last digit by integer division
}
return true; // Returning true if all digits are the same
}
console.log(test_same_digit(1234)); // Output: false
console.log(test_same_digit(1111)); // Output: true
console.log(test_same_digit(22222222)); // Output: true
Output:
false true true
Live Demo:
See the Pen javascript-basic-exercise-140 by w3resource (@w3resource) on CodePen.
Flowchart:
ES6 Version:
/**
* Function to test if all digits in the number are the same
* @param {number} num - The input number
* @returns {boolean} - Returns true if all digits are the same, false otherwise
*/
const test_same_digit = (num) => {
let first = num % 10; // Extracting the last digit as a reference
while (num) {
if (num % 10 !== first) return false; // Checking if the current digit is different from the reference
num = Math.floor(num / 10); // Removing the last digit by integer division
}
return true; // Returning true if all digits are the same
};
console.log(test_same_digit(1234)); // Output: false
console.log(test_same_digit(1111)); // Output: true
console.log(test_same_digit(22222222)); // Output: true
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