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Java Exercises: Test if the first and the last element of an array of integers are same

Java Basic: Exercise-75 with Solution

Write a Java program to test if the first and the last element of an array of integers are same. The length of the array must be greater than or equal to 2.

Sample Solution:

Java Code:

import java.lang.*;
 public class Exercise75 {
 public static void main(String[] args)
 {
    int[] num_array = {50, -20, 0, 30, 40, 60, 10};
    
	System.out.println (num_array.length >= 2 && num_array[0] ==  num_array[num_array.length-1]);
 }
}

Sample Output:

false

Pictorial Presentation:

Java exercises: Test if the first and the last element of an array of integers are same
Java exercises: Test if the first and the last element of an array of integers are same

Flowchart:

Flowchart: Test if the first and the last element of an array of integers are same

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