Java Exercises: Check if an array of integers contains a specified number next to each other or there are two same specified numbers separated by one element
Java Basic: Exercise-97 with Solution
Write a Java program to check if an array of integers contains a specified number next to each other or there are two same specified numbers separated by one element.
Pictorial Presentation:

Sample Solution:
Java Code:
import java.util.*;
import java.io.*;
public class Exercise97 {
public static void main(String[] args)
{
int[] array_nums = {10, 20, 10, 50, 20, 13, 50};
//int[] array_nums = {10, 10, 50, 50, 20, 13, 50};
boolean testd = false;
int result=0;
int x = 10;
for(int i = 0; i < array_nums.length - 1; i++) {
if(array_nums[i] == x && array_nums[i+1] == x)
{
System.out.printf( String.valueOf(true));
result = 1 ;
}
if(i <= array_nums.length - 3 && array_nums[i] == x && array_nums[i+2] == x)
{
System.out.printf( String.valueOf(true));
result = 1 ;
}
}
if (result==0)
{
System.out.printf( String.valueOf(false));
}
System.out.printf("\n");
}
}
Sample Output:
true
Flowchart:

Java Code Editor:
Contribute your code and comments through Disqus.
Previous: Write a Java program to check if there is a 10 in a given array of integers with a 20 somewhere later in the array.
Next: Write a Java program to check if the value 20 appears three times and no 20’s are next to each other in an given array of integers.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
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
- Exercises: Weekly Top 12 Most Popular Topics
- Pandas DataFrame: Exercises, Practice, Solution
- Conversion Tools
- JavaScript: HTML Form Validation
- SQL Exercises, Practice, Solution - SUBQUERIES
- C Programming Exercises, Practice, Solution : For Loop
- Python Exercises, Practice, Solution
- Python Data Type: List - Exercises, Practice, Solution
- C++ Basic: Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - exercises on Employee Database
- SQL Exercises, Practice, Solution - exercises on Movie Database
- SQL Exercises, Practice, Solution - exercises on Soccer Database
- C Programming Exercises, Practice, Solution : Recursion