48 lines
1.4 KiB
Java
48 lines
1.4 KiB
Java
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package strings;
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/**
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* Vowel Count is a system whereby character strings are placed in order based on the
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* position of the characters in the conventional ordering of an alphabet. Wikipedia:
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* https://en.wikipedia.org/wiki/Alphabetical_order
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*/
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class CheckVowels{
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public static void main(String[] args) {
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assert !hasVowels("This is a strings");
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assert hasVowels("Hello World");
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assert hasVowels("Java is fun");
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assert !hasVowels("123hi");
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assert hasVowels("Coding vs Programming");
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}
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/**
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* Check if a string is has vowels or not
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*
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* @param input a string
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* @return {@code true} if given string has vowels, otherwise {@code false}
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*/
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public static boolean hasVowels(String input){
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if(input.matches("[AEIOUaeiou]")){
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countVowels(input);
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return true;
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}
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return false;
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}
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/**
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* count the number of vowels
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*
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* @param input a string
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* prints the count of vowels
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*/
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public static void countVowels(String input){
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input.toLowerCase();
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int count=0;
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int i=0;
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while(i<input.length()){
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if(input.charAt(i)=='a' || input.charAt(i)=='e'||input.charAt(i)=='i'||input.charAt(i)=='o'||input.charAt(i)=='u' ){
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count++;
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}
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i++;
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}
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System.out.println(count);
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}
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}
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