Consider the problem of counting, in a given text, the number of substrings that start with an `A`and end with a `B`. For example, there are four such substrings in for this problem and determine its efficiency class [in pseudo code]. CABAAXBYA`. Design a brute-force algorithm

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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C.
Transcribed Image Text:券 C.
### Problem 1
Consider the problem of counting, in a given text, the number of
substrings that start with an `A
are four such substrings in
for this problem and determine its efficiency class [in pseudo code].
and end with a `B`. For example, there
Design a brute-force algorithm
CABAAXBYA
#### Answer:
Transcribed Image Text:### Problem 1 Consider the problem of counting, in a given text, the number of substrings that start with an `A are four such substrings in for this problem and determine its efficiency class [in pseudo code]. and end with a `B`. For example, there Design a brute-force algorithm CABAAXBYA #### Answer:
Expert Solution
Setup

Let any string be represented by an array of characters.

For example, the given string CABAAXBYA can be respresented by an array S[] such that

S[1] = C
S[2] = A
S[3] = B
S[4] = A
S[5] = A
S[6] = X
S[7] = B
S[8] = Y
S[9] = A

The below algorithm will accept such array as input. Note, index starts from 1, not zero

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