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Angelos Chalaris
2017-12-27 11:02:46 +02:00
parent 37bb271221
commit 3d79413392
45 changed files with 89 additions and 91 deletions
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snippets/isArmstrongNumber.md
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@ -5,8 +5,8 @@ Checks if the given number is an Armstrong number or not.
Convert the given number into an array of digits. Use `Math.pow()` to get the appropriate power for each digit and sum them up. If the sum is equal to the number itself, return `true` otherwise `false`.
```js
const isArmstrongNumber = digits =>
( arr => arr.reduce( ( a, d ) => a + Math.pow( parseInt( d ), arr.length ), 0 ) == digits ? true : false )( ( digits+'' ).split( '' ) );
const isArmstrongNumber = digits =>
(arr => arr.reduce((a, d) => a + Math.pow(parseInt(d), arr.length), 0) == digits)((digits + '').split(''));
// isArmstrongNumber(1634) -> true
// isArmstrongNumber(371) -> true
// isArmstrongNumber(56) -> false