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Java program to check occurrence of each vowel in String
To count occurence of vowels in a string again use Map utility of java as used in calculating occurence of each character in string.Put each vowel as key in Map and put initial value as 1 for each key.Now compare each character with key of map if a character matches with a key then increase its corresponding value by 1.
Example
public class OccurenceVowel {
public static void main(String[] args) {
String str = "AEAIOG";
LinkedHashMap<Character, Integer> hMap = new LinkedHashMap();
hMap.put('A', 0);
hMap.put('E', 0);
hMap.put('I', 0);
hMap.put('O', 0);
hMap.put('U', 0);
for (int i = 0; i <= str.length() - 1; i++) {
if (hMap.containsKey(str.charAt(i))) {
int count = hMap.get(str.charAt(i));
hMap.put(str.charAt(i), ++count);
}
}
System.out.println(hMap);
}
}Output
{A=2, E=1, I=1, O=1, U=0}
Updated on: 23-Jun-2020
2K+ Views
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