
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
A substring in programming represents all characters from a string, between two specified indices. Given a variable string called seq, a student writes the following program that will generate all nonempty substrings of seq:
- for i in range(len(seq)) : # line 1
- for j in range(i) : # line 2
- print(seq[j:i]) # line 3
Which of the following changes make the above program correct?
A. Program is correct as it is.
B. Change line 1 to: for i in range(len(seq)+1) :
C. Change line 3 to: print(seq[j:i+1])
D. Change line 2 to: for j in range(i+1) :
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