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quickSort.js
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58 lines (43 loc) · 1.07 KB
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function quickSort (recievedArray) {
const sortedArray = Object.assign([], recievedArray)
function partition (array, begin, end) {
const pivot = array[Math.floor((end + begin) / 2)]
let i = begin
let j = end
while (i <= j) {
while (array[i] < pivot) {
i++
}
while (array[j] > pivot) {
j--
}
if (i <= j) {
swap(array, i, j)
i++
j--
}
}
return i
}
function sort (array, begin, end) {
let index
if (array.length > 1) {
index = partition(array, begin, end)
if (begin < index - 1)
sort(array, begin, index - 1)
if (index < end)
sort(array, index, end)
}
return array
}
function swap (array, firstIndex, secondIndex) {
const temp = array[firstIndex]
array[firstIndex] = array[secondIndex]
array[secondIndex] = temp
}
return sort(sortedArray, 0, sortedArray.length - 1)
}
const array = [3, 2, 9, 7, 24, 11]
const sortedArray = quickSort(array)
console.log('array', array)
console.log('sortedArray', sortedArray)