String operations

String operations are like playing with blocks that have words written on them. We can move the blocks around, add more blocks, take away blocks, and even change the words on the blocks.

For example, if we have the word "dog" on one block and "walk" on another, we can join them together to make the sentence "dog walk". That's called concatenation.

We can also change the word "dog" to "cat" by taking away the "d" block and putting a "c" block in its place. That's called substitution.

There's also something called indexing, where we can find a specific block in the pile using its position number. For instance, if we have the sentence "I love ice cream", we can use indexing to find the third block, which would be "ice".

Finally, we can also split up a sentence into separate blocks using a technique called splitting. For example, if we have the sentence "The quick brown fox", we can split it into separate words to get a list of blocks that say "The", "quick", "brown", and "fox".

Overall, string operations give us a lot of power to manipulate and play with words and sentences, kind of like building with blocks!