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Javascript function, for adding all numbers from 1 to n, inclusive
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| /** | |
| * Adds all numbers from 1 to maxInteger, inclusive | |
| */ | |
| function addAll (maxInteger) { | |
| let n = maxInteger; | |
| let m = 0; | |
| if (n%2 === 1) { | |
| m = n; | |
| n = n - 1; | |
| } | |
| return (n + n/2 + ((n/2)-1)*n) + m; | |
| } | |
| // See jsfiddle: https://jsfiddle.net/4aesf8oo/1/ |
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