DSA · Theory

Difference between bubble sort and merge sort

Theory

445/810

Difference between bubble sort and merge sort

Difference between bubble sort and merge sort is a DSA topic. In plain words you use it for names A→Z in the roll list. Don’t start with a slogan — start with that picture.

Smallest example: n log n vs n². Type it, run it, and say what you see. If you can do that from memory, you know Difference between bubble sort and merge sort.

From the example next to this theory: Difference between bubble sort and merge sort — bubble sort swaps adjacent out-of-order pairs repeatedly.

Trap — unstable sort when equal keys matter. Fix that before you talk about advanced DSA.

Viva — what is Difference between bubble sort and merge sort? Then show n log n vs n². Then name the trap.

Exam tip

What is Difference between bubble sort and merge sort? Show this: n log n vs n². Trap: unstable sort when equal keys matter.

Example

def bubble_sort(arr):
    a = arr[:]
    n = len(a)
    for i in range(n):
        for j in range(0, n - i - 1):
            if a[j] > a[j + 1]:
                a[j], a[j + 1] = a[j + 1], a[j]
    return a

print(bubble_sort([5, 1, 4, 2]))

Difference between bubble sort and merge sort — bubble sort swaps adjacent out-of-order pairs repeatedly.

Short notes

DefDifference between bubble sort and merge sort — names A→Z in the roll list.
Rulen log n vs n²
Trapunstable sort when equal keys matter
Usethe roll list

DSA · Theory

Difference between bubble sort and merge sort

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Theory

445/810

Difference between bubble sort and merge sort

Difference between bubble sort and merge sort is a DSA topic. In plain words you use it for names A→Z in the roll list. Don’t start with a slogan — start with that picture.

Smallest example: n log n vs n². Type it, run it, and say what you see. If you can do that from memory, you know Difference between bubble sort and merge sort.

From the example next to this theory: Difference between bubble sort and merge sort — bubble sort swaps adjacent out-of-order pairs repeatedly.

Trap — unstable sort when equal keys matter. Fix that before you talk about advanced DSA.

Viva — what is Difference between bubble sort and merge sort? Then show n log n vs n². Then name the trap.

Exam tip

What is Difference between bubble sort and merge sort? Show this: n log n vs n². Trap: unstable sort when equal keys matter.

Example

def bubble_sort(arr):
    a = arr[:]
    n = len(a)
    for i in range(n):
        for j in range(0, n - i - 1):
            if a[j] > a[j + 1]:
                a[j], a[j + 1] = a[j + 1], a[j]
    return a

print(bubble_sort([5, 1, 4, 2]))

Difference between bubble sort and merge sort — bubble sort swaps adjacent out-of-order pairs repeatedly.

Short notes

DefDifference between bubble sort and merge sort — names A→Z in the roll list.
Rulen log n vs n²
Trapunstable sort when equal keys matter
Usethe roll list

Difference between bubble sort and merge sort

Example

Short notes

Questions

Difference between bubble sort and merge sort

Example

Short notes

Questions