Question

Write a static, void method named replaceAll that accepts an array of int's named numbers as well as an int named num. The method must replace all occurrences of num . that are found in even-numbered index portions with the value of 3. That is, if the value num is stored in numbers [4] then it must be replaced with the value of 3 since 4 is an even number. But if num is found in numbers[5], it must not be replaced since 5 is not an even number.

public static void replaceAllNum(int[] numbers, int num) {

Answer 1

JAVA PROGRAM:-

public class MyClass {
  
public static void replaceAllNum(int[] numbers, int num) {
for(int i=0;i<numbers.length;i++)
{
if(numbers[i]==num)
if(i%2==0)
numbers[i]=3;
}
}
  
public static void main(String args[]) {
int [] arr = new int [] {1, 5, 5, 4, 3, 5, 5};
  
  
replaceAllNum(arr, 5);
System.out.println("Elements of given array: ");
for (int i = 0; i < arr.length; i++) {
System.out.print(arr[i] + " ");
}
}
}

Output:-