Write a function solution that, given a string S consisting of N letters 'a' and/or 'b' returns true when all occurrences of letter 'a' are before all occurrences of letter 'b' and returns false otherwise. Examples: 1. Given S = "aabbb", the function should return true. 2. Given S="ba", the function should return false. 3. Given S="aaa", the function should return true. Note that 'b' does not need to occur in S. 4. Given S="b", the function should return true. Note that 'a' does not need to occur in S. 5. Given S="abba", the function should return false. Write an efficient algorithm for the following assumptions: N is an integer within the range [1..300,000]; • string S consists only of the characters "a" and/or "b".

Write a function solution that, given a string S consisting of N letters 'a' and/or 'b' returns true when all occurrences of letter 'a' are before all occurrences of letter 'b' and returns false otherwise. Examples: 1. Given S = "aabbb", the function should return true. 2. Given S="ba", the function should return false. 3. Given S="aaa", the function should return true. Note that 'b' does not need to occur in S. 4. Given S="b", the function should return true. Note that 'a' does not need to occur in S. 5. Given S="abba", the function should return false. Write an efficient algorithm for the following assumptions: N is an integer within the range [1..300,000]; • string S consists only of the characters "a" and/or "b".

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter6: User-defined Functions

Section: Chapter Questions

Problem 22PE

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