please write a python code to solve the code challenge. please show me the code you use and use the sample input and output for the problem.

Code Challenge: Solve the String Composition Problem. . Input: An integer k and a string Text. Output: Composition (Text) (the k-mers can be provided in any order) Some notes on how code challenges work 1. When you click Download Dataset", you will receive a randomized dataset. Run your program (in the programming language of your choice) on this dataset, and then return the output of your program in the text field below. (Please do not enter your code in the browser.) 2. You can see how you should format your answer by looking at the sample output and extra dataset 3. Every time you click Try Again, you will need to download a new dataset Extra Dataset and Test Dataset Sample Input: 5 Sample Output: CAATC AATCC ATCCA TCCAA CCAAC