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Bubble Sort - Typescript
Bubble Sort - Typescript
Bubble sort algorithm is simple and easy. In bubble sort every pair of adjacent value is compared and swap if the first value is greater than the second one. By this with every iteration the greatest value goes to the right side making it ascending order.
Time Complexity
Best: O(n)
Average: O(n^2)
Worst: O(n^2)
Code
const bubbleSort = (arr: number[]): number[] => {
const len = arr.length;
for (let i = 0; i < len; i++) {
for (let j = 0; j < len; j++) {
if (arr[j] > arr[j + 1]) {
[arr[j], arr[j + 1]] = [arr[j + 1], arr[j]];
}
}
}
return arr;
}
bubbleSort([5, 3, 1, 4, 6])
Output
Output: [1, 3, 4, 5, 6]
Here how the code is working
Iteration 0 (unsorted array): [5, 3, 1, 4, 6]
Iteration 1, key is 3 (was at index 1): [5, 3, 1, 4, 6] → [3, 5, 1, 4, 6]
Iteration 2, key is 1 (was at index 2): [3, 5, 1, 4, 6] → [1, 3, 5, 4, 6]
Iteration 3, key is 4 (was at index 3): [1, 3, 5, 4, 6] → [1, 3, 4, 5, 6]
Iteration 4, key is 6 (was at index 4): [1, 3, 4, 5, 6] → [1, 3, 4, 5, 6] — because 6 was already in the right place, no changes are made
That’s all for the bubble sort, thanks for reading!