Traversing the List

Woman Reading Long List

Last week, we covered the basics of the lists in Computer Science. A common operation on lists is traversal of the list. Traversal is the process of accessing each element of a list in order and performing some operation. Let’s see how we can do it in SNAP!.

While accessing each element of the list, we need a pointer to keep track of the current element we are accessing in the list. To achieve that, we will use a variable, let’s call it indexindex will start at the first element of the list, and move to the last element of the list one element at a time. After starting from the first element, to move the index to the next element, we will need to increment it by 1.

Let’s see this in action:

Traversal of List in SNAP!Copy this code in your Scripting area and see the results for yourself. Then, change the input of list and see how it impacts the output.

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A geek, a techie, a daughter, a sister and a wife. Worked at Microsoft for 8 years and currently working at Amazon Web Services (AWS). All opinions expressed here are my own and has no correlation to my employer or ex-employers!

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