Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question
Using python IDLE and write code using repetition to create the following patterns
999999999888888887777777666666555554444333221
Note; create means you must create with program code, not just assign it as a literal.
The problem
Write a program that asks the user for an integer between 1 and 25 and then generates the pattern that many
times.
Here are two sample runs:
How many rows? 5
999999999888888887777777666666555554444333221
999999999888888887777777666666555554444333221
999999999888888887777777666666555554444333221
999999999888888887777777666666555554444333221
999999999888888887777777666666555554444333221
How many rows? 30
Out of range - must be between 1 and 25
How many rows? 0
Out of range - must be between 1 and 25
How many rows? 2
999999999888888887777777666666555554444333221
999999999888888887777777666666555554444333221
Advice: there are two issues to deal with for this program – getting the number and printing out the pattern that
many times. A systematic approach is to
1. get your program working to print the pattern once, (a loop)
2. expand your program to print it multiple times, (nested loop_)
3. Expand to include the request for the number of times.
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