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Constantiner/sum-pairs.js

Last active October 22, 2017 13:39
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sum-pairs.js
const getPairs = (arr, x) => arr.reduce(({pairs, subarray}, element) => ({pairs,
subarray: (subarray.forEach(elem => element + elem === x ? pairs.push([element, elem]) : elem), subarray.slice(1))}),
{pairs: [], subarray: arr.slice(1)}).pairs;
const arr = [ 3, 4, 5, -2, 10, 11, 12, -1, 0, 7, 8 ],
x = 10;
console.log(getPairs(arr, x));
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Constantiner commented Oct 20, 2017

A sample solution for a simple problem of finding pairs in array of integers which sum is equal to some integer value.

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