Created
February 9, 2020 23:11
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Javascript Freecodecamp Algorithm #30: Pairwise
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| function pairwise(arr, arg) { | |
| const usedDict = {}; | |
| let output = 0; | |
| for (let i = 0; i < arr.length - 1; i++) { | |
| if (usedDict[i]) { | |
| continue; | |
| } | |
| const iVal = arr[i]; | |
| for (let j = i + 1; j < arr.length; j++) { | |
| if (usedDict[j]) { | |
| continue; | |
| } | |
| const jVal = arr[j]; | |
| if (iVal + jVal === arg) { | |
| usedDict[i] = true; | |
| usedDict[j] = true; | |
| output += i + j; | |
| break; | |
| } | |
| } | |
| } | |
| return output; | |
| } |
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