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raklaptudirm merged 1 commit into from May 23, 2021
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OddEvenSort Added #243

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40 changes: 40 additions & 0 deletions Sorts/OddEvenSort.js
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/*
odd–even sort or odd–even transposition sort
is a relatively simple sorting algorithm, developed originally for use on parallel processors with local interconnections.
It is a comparison sort related to bubble sort, with which it shares many characteristics.

for more information : https://en.wikipedia.org/wiki/Odd%E2%80%93even_sort
*/

// Helper function to swap array items
function swap (arr, i, j) {
const tmp = arr[i]
arr[i] = arr[j]
arr[j] = tmp
}

function oddEvenSort (arr) {
let sorted = false
while (!sorted) {
sorted = true
for (let i = 1; i < arr.length - 1; i += 2) {
if (arr[i] > arr[i + 1]) {
swap(arr, i, i + 1)
sorted = false
}
}
for (let i = 0; i < arr.length - 1; i += 2) {
if (arr[i] > arr[i + 1]) {
swap(arr, i, i + 1)
sorted = false
}
}
}
}
const testArray = [5, 6, 7, 8, 1, 2, 12, 14, 5, 3, 2, 2]

// Array before sort
console.log(testArray)
oddEvenSort(testArray)
// Array after sort
console.log(testArray)