w3resource

Java Array Exercises: Check if an array of integers contains two specified elements

Java Array: Exercise-32 with Solution

Write a Java program to check if an array of integers contains two specified elements 65 and 77.

Pictorial Presentation:

Java Array Exercises: Check if an array of integers contains two specified elements

Sample Solution:

Java Code:

import java.util.*; 
import java.io.*; 
 public class Exercise32 {
 public static void main(String[] args)
 {
    int[] array_nums = {77, 77, 65, 65, 65, 77};
	System.out.println("Original Array: "+Arrays.toString(array_nums)); 
	int num1 = 77;
    int num2 = 65;
	
	System.out.println("Result: "+result(array_nums, num1, num2));
    }	
  
  public static boolean result(int[] array_nums, int num1, int num2) {
    for (int number : array_nums) {
      boolean r = number != num1 && number != num2;
      if (r) {
        return false;
        }
     }
        return true;
   }
}

Sample Output:

                                                                              
Original Array: [77, 77, 65, 65, 65, 77]                               
Result: true

Flowchart:

Flowchart: Java exercises: Check if an array of integers contains two specified elements

Visualize Java code execution (Python Tutor):


Java Code Editor:

Improve this sample solution and post your code through Disqus

Previous: Write a Java program to check if the sum of all the 10's in the array is exactly 30.
Next: Write a Java program to remove the duplicate elements of a given array and return the new length of the array.

What is the difficulty level of this exercise?



Java: Tips of the Day

Syntax for creating a two-dimensional array in Java

Try the following :

int[][] multi = new int[5][10];

... which is a short hand for something like this:

int[][] multi = new int[5][];
multi[0] = new int[10];
multi[1] = new int[10];
multi[2] = new int[10];
multi[3] = new int[10];
multi[4] = new int[10];

Note that every element will be initialized to the default value for int, 0, so the above are also equivalent to:

int[][] multi = new int[][]{
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
};

Ref: https://bit.ly/3vYSxFz