18 lines
279 B
JavaScript
18 lines
279 B
JavaScript
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/**
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* @param {number[]} arr
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* @param {Function} fn
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* @return {number[]}
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*/
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var filter = function(arr, fn) {
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let new_arr = new Array();
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let i = 0;
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for (let x of arr) {
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if (fn(x, i++)) {
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new_arr.push(x);
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}
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}
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return new_arr;
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};
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