Write a Java program to declare and store numbers from 1 to 10 in a single dimensional array and
display the output in the following format.
1
2 3
4 5 6
7 8 9 10
To achieve the desired output, you can use nested loops in Java to iterate through the array and display the numbers in the desired format. Here's a Java program that declares and stores numbers from 1 to 10 in a single-dimensional array and displays the output in the specified format:
```java
public class NumberTriangle {
public static void main(String[] args) {
int[] numbers = new int[10];
// Store numbers from 1 to 10 in the array
for (int i = 0; i < numbers.length; i++) {
numbers[i] = i + 1;
}
// Display the numbers in the desired format
int count = 1;
for (int i = 1; i <= 4; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(numbers[count - 1] + " ");
count++;
}
System.out.println();
}
}
}
```
Explanation:
1. Declare an array `numbers` of size `10` to store the numbers from 1 to 10.
2. Use a for loop to populate the `numbers` array with the values from 1 to 10.
3. Use two nested for loops to iterate through the array and print the numbers in the desired format.
4. The outer loop iterates from `1` to `4`, controlling the number of rows in the output.
5. The inner loop iterates from `1` to the current row number (i.e., `1` to `i`), and prints the corresponding number from the `numbers` array.
6. After printing each number, increment the `count` variable to keep track of the next number to be printed.
7. Finally, use `System.out.println()` to print a new line after each row of numbers.
When you run this program, the output will be displayed in the following format:
```
1
2 3
4 5 6
7 8 9 10
```
This program uses a simple approach to populate the array and display the output in the desired format. Feel free to modify it according to your needs.