如何过滤2d数组？ [重复]

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• Remove duplicate element pairs from multidimensional array 7 answers

从多维数组7答案中删除重复的元素对

What is best way to filter 2d arr and return also 2d but with only unique arrays as elements: [[7,3,7],[7,7,3],[3,7,7],[3,7,7],[7,7,3],[7,3,7]] should return [[7,3,7],[7,7,3],[3,7,7]] ?

什么是过滤2d arr并返回2d但只有唯一数组作为元素的最佳方法:[[7,3,7],[7,7,3],[3,7,7],[3,7, 7],[7,7,3],[7,3,7]应该返回[[7,3,7],[7,7,3],[3,7,7]]?

1 个解决方案

#1

Try this:

Working Example JSBin

工作示例JSBin

var uniques = function(items) {
    var map = {};
    return items.filter(function(item) {
        return item in map ? false : map[item] = true;
    });
};