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Count the number of element in java using hashmap

sam9934 answered on February 9, 2024 Popularity 3/10 Helpfulness 2/10

answer Count the number of element in java using hashmap

Count the number of element in java using hashmap

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import java.util.*;
//saiyam9934
public class ElementCount {
    public static void main(String[] args) {
        int[] array = {1, 2, 3, 4, 1, 2, 3, 1, 1};
        
        // Create a HashMap to store the count of each element
        Map<Integer, Integer> countMap = new HashMap<>();
        
        // Count the occurrences of each element
        for (int num : array) {
            if (countMap.containsKey(num)) {
                countMap.put(num, countMap.get(num) + 1);
            } else {
                countMap.put(num, 1);
            }
        }
        
        // Print the count of each element
        System.out.println("Element Count:");
        for (Map.Entry<Integer, Integer> entry : countMap.entrySet()) {
            System.out.println(entry.getKey() + ": " + entry.getValue());
        }
    }
}

Popularity 3/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: count element hashmap java using

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Contributed on Feb 09 2024

sam9934

0 Answers Avg Quality 2/10

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Count the number of element in java using hashmap

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