| 1 | "use strict";
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| 2 | function distance(x0, y0, x1, y1) {
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| 3 | return Math.hypot(x1 - x0, y1 - y0);
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| 4 | }
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| 5 | function gcd(x, y) {
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| 6 | return !y ? x : gcd(y, x % y);
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| 7 | }
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| 8 | function max(arr) {
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| 9 | return Math.max.apply(null, arr);
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| 10 | }
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| 11 | function mean(arr) {
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| 12 | return sum(arr) / arr.length;
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| 13 | }
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| 14 | function min(arr) {
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| 15 | return Math.min.apply(null, arr);
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| 16 | }
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| 17 | function sum(arr) {
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| 18 | return arr.reduce(function (pre, cur) { return pre + cur; });
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| 19 | }
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| 20 | var obj = { distance: distance, gcd: gcd, max: max, mean: mean, min: min, sum: sum };
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| 21 | module.exports = obj;
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| 22 | |
| \ | No newline at end of file |