Sorting

Bubble Sort

Imagine kids lining up by height, but each kid can only compare with the neighbour directly beside them and swap places.

Merge Sort

Two sorted piles of exam papers need to become one.

Quick Sort

Organising a bookshelf: pick one book, put everything thinner on the left and thicker on the right.

Counting Sort

Sorting coins is not done by comparing pairs.

Heap Sort

A knockout tournament: after the first rounds, the champion stands on top.

Insertion Sort

You are holding cards.

Selection Sort

Picking a football team by height: scan the whole line for the shortest kid and put them first.