JavaScript: Find the smallest round number that is not less than a given value

Last update on May 30 2022 10:06:16 (UTC/GMT +8 hours)

JavaScript Basic: Exercise-128 with Solution

Write a JavaScript program to find the smallest round number that is not less than a given value.

Note: A round number is informally considered to be an integer that ends with one or more zeros. So, 590 is rounder than 592, but 590 is less round than 600.

Pictorial Presentation:

JavaScript: Find the smallest round number that is not less than a given value.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title> Find the smallest round number that is not less than a given value</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function nearest_round_number(num) {
    while (num % 10) {
        num++;
    }
    return num;
}

console.log(nearest_round_number(56));
console.log(nearest_round_number(592));

Sample Output:

60
600

Flowchart:

ES6 Version:

function nearest_round_number(num) {
    while (num % 10) {
        num++;
    }
    return num;
}

console.log(nearest_round_number(56));
console.log(nearest_round_number(592));

Live Demo:

See the Pen javascript-basic-exercise-128 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

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Next: Write a JavaScript program to find the smallest prime number strictly greater than a given number.

JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = []; arr[0] = "Jani"; arr[1] = "Hege"; arr[2] = "Stale"; arr[3] = "Kai Jim"; arr[4] = "Borge"; console.log(arr.join()); arr.splice(2, 0, "Lene"); console.log(arr.join());

Ref: https://bit.ly/2BXbp04