Selection Sort
Imagine you have a bunch of numbered blocks that need to be arranged from smallest to biggest. We’re going to use a method called Selection Sort to do this. It’s like organizing toys from the messiest to the neatest!
How Does Selection Sort Work?
- Finding the Smallest Block: First, we look at all the blocks and find the one with the smallest number.
- Putting It in Place: Once we find the smallest block, we put it in the first spot.
- Next Smallest: Then, we look at the rest of the blocks (excluding the first one), find the smallest one again, and put it in the second spot.
- Keep Going: We keep doing this until all the blocks are in order from smallest to biggest.
Example:
Let’s say we have these blocks: [64, 25, 12, 22, 11].
- First, find the smallest (11) and swap it to the front:
[11, 25, 12, 22, 64]. - Next, find the smallest among the rest (12) and swap it to the second spot:
[11, 12, 25, 22, 64]. - Keep doing this until all the blocks are in order:
[11, 12, 22, 25, 64].
Why Use Selection Sort?
- Easy to Understand: It’s like picking the smallest toy and putting it in the right place.
- Helps Learn Sorting: Teaches us how to organize things in a computer.
- Not Always the Fastest: For really big lists, there are faster ways, but Selection Sort is good for learning and small tasks.
Conclusion:
Selection Sort is a cool way to learn about sorting! It’s like tidying up toys by picking the smallest first and putting them in order. Learning about Selection Sort helps us understand how computers sort things, making it easier to solve problems and build cool stuff with computers!
