Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly
Sign up
Appearance settings

Commit 2e18fbb

Browse files
authored
merge: Add the Stooge Sort Algorithm (#998)
* Add stooge sort sorting algorithm with included tests * Add stooge sort sorting algorithm with included tests * Add correct url for more information * Add time complexity warning
1 parent 5641b6f commit 2e18fbb

File tree

2 files changed

+52
-0
lines changed

2 files changed

+52
-0
lines changed

‎Sorts/StoogeSort.js

Lines changed: 21 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,21 @@
1+
/*
2+
* Stooge Sort sorts an array based on divide and conquer principle
3+
* note the exceptionally bad time complexity
4+
* more information: https://en.wikipedia.org/wiki/Stooge_sort
5+
*
6+
*/
7+
export function stoogeSort (items, leftEnd, rightEnd) {
8+
if (items[rightEnd - 1] < items[leftEnd]) {
9+
const temp = items[leftEnd]
10+
items[leftEnd] = items[rightEnd - 1]
11+
items[rightEnd - 1] = temp
12+
}
13+
const length = rightEnd - leftEnd
14+
if (length > 2) {
15+
const third = Math.floor(length / 3)
16+
stoogeSort(items, leftEnd, rightEnd - third)
17+
stoogeSort(items, leftEnd + third, rightEnd)
18+
stoogeSort(items, leftEnd, rightEnd - third)
19+
}
20+
return items
21+
}

‎Sorts/test/StoogeSort.test.js

Lines changed: 31 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,31 @@
1+
import { stoogeSort } from '../StoogeSort'
2+
3+
test('The StoogeSort of the array [1, 6, 4, 7, 2] is [1, 2, 4, 6, 7]', () => {
4+
const arr = [1, 6, 4, 7, 2]
5+
const res = stoogeSort(arr, 0, arr.length)
6+
expect(res).toEqual([1, 2, 4, 6, 7])
7+
})
8+
9+
test('The StoogeSort of the array [] is []', () => {
10+
const arr = []
11+
const res = stoogeSort(arr, 0, arr.length)
12+
expect(res).toEqual([])
13+
})
14+
15+
test('The StoogeSort of the array [46, 15, 49, 65, 23] is [15, 23, 46, 49, 65]', () => {
16+
const arr = [46, 15, 49, 65, 23]
17+
const res = stoogeSort(arr, 0, arr.length)
18+
expect(res).toEqual([15, 23, 46, 49, 65])
19+
})
20+
21+
test('The StoogeSort of the array [136, 459, 132, 566, 465] is [132, 136, 459, 465, 566]', () => {
22+
const arr = [136, 459, 132, 566, 465]
23+
const res = stoogeSort(arr, 0, arr.length)
24+
expect(res).toEqual([132, 136, 459, 465, 566])
25+
})
26+
27+
test('The StoogeSort of the array [45, 3, 156, 1, 56] is [1, 3, 45, 56, 156]', () => {
28+
const arr = [45, 3, 156, 1, 56]
29+
const res = stoogeSort(arr, 0, arr.length)
30+
expect(res).toEqual([1, 3, 45, 56, 156])
31+
})

0 commit comments

Comments
(0)

AltStyle によって変換されたページ (->オリジナル) /