counting the number of characters in a string java
public static void main(String[] args) {
int wordCount = 0;
String word = "hill";
for (char letter = 'a'; letter <= 'z'; letter++) {
for (int i = 0; i < word.length(); i++) {
if (word.charAt(i) == letter) {
wordCount++;
}
}
if (wordCount > 0) {
System.out.println(letter + "=" + wordCount);
wordCount = 0;
}
}
}counter in java
HashMap<String, MutableInteger> efficientCounter = new HashMap<String, MutableInteger>();
for (String a : sArr) {
MutableInteger initValue = new MutableInteger(1);
MutableInteger oldValue = efficientCounter.put(a, initValue);
if(oldValue != null){
initValue.set(oldValue.get() + 1);
}
}java count
public static void main(String[] args)
{
// creating a list of Integers
List<Integer> list = Arrays.asList(0, 2, 4, 6,
8, 10, 12);
// Using count() to count the number
// of elements in the stream and
// storing the result in a variable.
long total = list.stream().count();
// Displaying the number of elements
System.out.println(total);
}Copyright © 2021 Codeinu
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