Scala Programming: Replace every element with the next greatest element in a given array of integers
Scala Programming Array Exercise-34 with Solution
Write a Scala program to replace every element with the next greatest element (from right side) in a given array of integers. There is no element next to the last element, therefore replace it with -1.
Sample Solution:
Scala Code:
object Scala_Array {
def test(arr_nums: Array[Int]): Array[Int] = {
val size = arr_nums.length;
var max_from_right_num = arr_nums(size - 1);
arr_nums(size - 1) = -1;
var temp = 0
for (i <- size - 2 to 0 by -1) {
temp = arr_nums(i);
arr_nums(i) = max_from_right_num;
if (max_from_right_num < temp)
max_from_right_num = temp;
}
arr_nums;
}
def main(args: Array[String]): Unit = {
val nums = Array(45, 20, 100, 23, -5, 2, -6);
println("Original array:");
for (x <- nums) {
print(s"${x}, ")
}
val result = test(nums);
println("\nThe modified array:");
for (x <- result) {
print(s"${x}, ")
}
}
}
Sample Output:
Original array: 45, 20, 100, 23, -5, 2, -6, The modified array: 100, 100, 23, 2, 2, -6, -1,
Scala Code Editor :
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Previous: Write a Scala program to separate even and odd numbers of a given array of integers. Put all even numbers first, and then odd numbers.
Next: Write a Scala program to find all pairs of elements in an array whose sum is equal to a specified number.
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