36 lines
779 B
TypeScript
36 lines
779 B
TypeScript
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export function equaln(v1: number, v2: number, fuzz = 1e-5)
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{
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return Math.abs(v1 - v2) <= fuzz;
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}
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export function FixIndex(index: number, arr: Array<any> | number)
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{
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let count = (arr instanceof Array) ? arr.length : arr;
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if (index < 0)
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return count + index;
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else if (index >= count)
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return index - count;
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else
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return index;
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}
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/**
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* @param compart 如果t2大于t1那么返回t2
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* @returns 索引
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*/
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export function Max<T>(arr: T[], compart: (t1: T, t2: T) => boolean): number
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{
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let best: T = arr[0];
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let bestIndex = 0;
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for (let i = 1; i < arr.length; i++)
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{
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let t1 = arr[i];
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if (compart(best, t1))
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{
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best = t1;
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bestIndex = i;
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}
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}
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return bestIndex;
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}
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