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const mergeSort = (startArray) => { | |
const length = startArray.length; | |
if (length === 1) { | |
return startArray; | |
} | |
const mid = Math.floor(length / 2); | |
const leftArray = startArray.slice(0, mid); | |
const rightArray = startArray.slice(mid, length); | |
return merge(mergeSort(leftArray), mergeSort(rightArray)); | |
}; | |
const merge = (leftArray, rightArray) => { | |
const sortedArray = []; | |
while (leftArray.length > 0 && rightArray.length > 0) { | |
if (leftArray[0] < rightArray[0]) { | |
sortedArray.push(leftArray.shift()); | |
} else { | |
sortedArray.push(rightArray.shift()); | |
} | |
} | |
return sortedArray.concat(leftArray).concat(rightArray); | |
}; | |
const inputArr = [3, 5, 2, 90, 4, 7]; | |
console.log(mergeSort(inputArr)); | |
module.exports = { | |
mergeSort, | |
}; |
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