Given a string, write a method to find the first non-repeating vowel (a, e, i, o, u) in it and return its index. If it doesn't exist, return -1. Assume that all the characters of the String is lowercase. Do not use String class functions other than charAt() and length() You can also try to solve with Map data structure like using a Map variable. Example input: google output: 5 explanation: only e is non-repeated vowel and it's index is 5 Example input: mood output: -1 explanation: o is repeated, no non-repeating vowel. Example input: responsible output: 4 explanation: e is repeated, o and i are not repeated, o is the first non-repeating vowel

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
Section: Chapter Questions
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Practice / First Non-Repeating Vowel
Given a string, write a method to find the first non-repeating vowel (a, e, i, o, u) in it and return its index.
● If it doesn't exist, return -1.
● Assume that all the characters of the String is lowercase.
Do not use String class functions other than charAt() and length()
You can also try to solve with Map data structure like using a Map<Character, Integer> variable.
●
Example
input: google
output: 5
explanation: only e is
non-repeated vowel and it's
index is 5
Example
input: mood
output: -1
explanation: o is repeated, no
non-repeating vowel.
Example
input: responsible
output: 4
explanation: e is repeated, o
and i are not repeated, o is the
first non-repeating vowel
Transcribed Image Text:Practice / First Non-Repeating Vowel Given a string, write a method to find the first non-repeating vowel (a, e, i, o, u) in it and return its index. ● If it doesn't exist, return -1. ● Assume that all the characters of the String is lowercase. Do not use String class functions other than charAt() and length() You can also try to solve with Map data structure like using a Map<Character, Integer> variable. ● Example input: google output: 5 explanation: only e is non-repeated vowel and it's index is 5 Example input: mood output: -1 explanation: o is repeated, no non-repeating vowel. Example input: responsible output: 4 explanation: e is repeated, o and i are not repeated, o is the first non-repeating vowel
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