Final Answer:
public class Main {
public static void main(String[] args) {
int[] array = new int[50];
int num = 2;
for (int i = 0; i < 50; i++) {
array[i] = num;
if (i % 2 == 0) {
num += 2;
} else {
num *= -1;
}
}
for (int value : array) {
System.out.println(value);
}
}
}
Step-by-step explanation:
To create an array in Java with the given sequence, we initialize an integer array of size 50. We then use a loop to fill the array with the numbers. Starting with 2, we alternate between adding 2 and multiplying by -1 to achieve the sequence. If the index is even, we add 2 to the previous number; if it’s odd, we multiply the previous number by -1. After populating the array, we use another loop to display all the numbers in the array.
The sequence starts with 2 and follows a pattern of adding 2 and then multiplying by -1 alternatively. This pattern is achieved by using a conditional statement within a loop to fill the array with the required numbers. The final step involves iterating through the array and displaying each element using a for-each loop.
This approach ensures that the array is correctly filled with the specified sequence of numbers and then displays them as required.