Java Array Exercises: Test if an array contains a specific value
Java Array: Exercise-5 with Solution
Write a Java program to test if an array contains a specific value.
Pictorial Presentation:

Sample Solution:
Java Code:
public class Exercise5 {
public static boolean contains(int[] arr, int item) {
for (int n : arr) {
if (item == n) {
return true;
}
}
return false;
}
public static void main(String[] args) {
int[] my_array1 = {
1789, 2035, 1899, 1456, 2013,
1458, 2458, 1254, 1472, 2365,
1456, 2265, 1457, 2456};
System.out.println(contains(my_array1, 2013));
System.out.println(contains(my_array1, 2015));
}
}
Sample Output:
true false
Flowchart:

Visualize Java code execution (Python Tutor):
Java Code Editor:
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Java: Tips of the Day
countOccurrences
Counts the occurrences of a value in an array.
Use Arrays.stream().filter().count() to count total number of values that equals the specified value.
public static long countOccurrences(int[] numbers, int value) { return Arrays.stream(numbers) .filter(number -> number == value) .count(); }
Ref: https://bit.ly/3kCAgLb
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