Lesson guide
What this Python exercise practices
Iterate In Reverse Order is a beginner practice lesson that focuses on loops, iteration, counters. It is designed to be solved in about 8 minutes with examples, starter code, and test feedback.
Prerequisites
- Python variables
- Lists or strings
- Basic for loop syntax
Difficulty and time
- Level
- Beginner
- Estimated time
- 8 minutes
Summary
Traverse a sequence from the end to the start and collect elements in reversed order.
Problem statement
Given a list, iterate over it in reverse order and return a new list containing the elements from last to first. Do not simply call list.reverse() in-place; produce a new list by iterating in reverse.
Task
Practice iterating in reverse using loops and return the reversed sequence as a new list.
Examples
Reverse numbers
Input
iterate_in_reverse([1,2,3])
Output
[3, 2, 1]
Explanation
The function visits elements from the end to the start and collects them.
Input format
A single list: iterate_in_reverse(lst)
Output format
A list with elements in reverse order: [last, ..., first]
Constraints
- The input list may be empty. - Preserve elements as-is (do not copy or transform them beyond reordering).
Samples
Sample input 0
iterate_in_reverse(['a','b'])
Sample output 0
['b', 'a']
Explanation 0
Reversed order of two elements.
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