从数组中获取最小的数组 [英] Get the smallest array from an array of arrays

问题描述

我有一个数组数组，我想从 paths array

I have an array of arrays, I want to get the smallest (shortest) path from paths array

paths = [ 
   ["LEFT", "RIGHT", "RIGHT", "BOTTOM", "TOP"],
   ["RIGHT", "LEFT", "TOP"],
   ["TOP", "LEFT"]
];

paths.map((path)=> Math.min(path.length));

推荐答案

使用 Array#reduce 方法.

var paths = [
  ["LEFT", "RIGHT", "RIGHT", "BOTTOM", "TOP"],
  ["RIGHT", "LEFT", "TOP"],
  ["TOP", "LEFT"]
];

console.log(paths.reduce((prev, next) => prev.length > next.length ? next : prev))

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