Thinking about Strings Intro to Computer Science CS1510, Section 2 Dr. Sarah Diesburg

What are strings? Sequences of characters We will often work with sequences of data String is just a specific example We will see many of the things we do with strings later on with other sequences of data

Sequences of data Can work with size of sequence Can work with individual pieces of information in the sequence

Thought Exercise Suppose I give you a string >>> mesg = “Today is Friday” What is the length of that string?

Thought Exercise >>> mesg = “Today is Friday” mesg[1]

Note about Answers >>> msg[3:9] Answer is ay is But how do we write this to show spaces? On answer sheets or tests, be very careful If I can’t tell that there are spaces, I might take points off

Questions so far?

Let’s talk about the lab Sequences, indexes, and slicing. Reversing the Str Working backwards and appending Working forwards and prepending Counting the vowels Handling both cases Using methods and handling only one case