Commit 964ba04

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fix: optimised armstrongNumber code (TheAlgorithms#1374)

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Lines changed: 7 additions & 10 deletions

Original file line number	Diff line number	Diff line change
`@@ -9,16 +9,13 @@`
`9`	`9`	`*/`
`10`	`10`
`11`	`11`	`const armstrongNumber = (num) => {`
`12`		`- if (num < 0 \|\| typeof num !== 'number') return false`
`13`		`-`
`14`		`- let newSum = 0`
`15`		`-`
`16`		`- const numArr = num.toString().split('')`
`17`		`- numArr.forEach((num) => {`
`18`		`- newSum += parseInt(num) ** numArr.length`
`19`		`- })`
`20`		`-`
`21`		`- return newSum === num`
	`12`	`+ if (typeof num !== 'number' \|\| num < 0) return false`
	`13`	`+ const numStr = num.toString()`
	`14`	`+ const sum = [...numStr].reduce(`
	`15`	`+ (acc, digit) => acc + parseInt(digit) ** numStr.length,`
	`16`	`+ 0`
	`17`	`+ )`
	`18`	`+ return sum === num`
`22`	`19`	`}`
`23`	`20`
`24`	`21`	`export { armstrongNumber }`

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