Scala Programming: Separate even and odd numbers of a given array of integers
Scala Programming Array Exercise-33 with Solution
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.
Sample Solution:
Scala Code:
object Scala_Array {
def test(arr: Array[Int]): Array[Int] = {
var left_side = 0
var right_side = arr.length - 1;
while (left_side < right_side) {
while (arr(left_side) % 2 == 0 && left_side < right_side) left_side += 1;
while (arr(right_side) % 2 == 1 && left_side < right_side) right_side -= 1;
if (left_side < right_side) {
val temp = arr(left_side);
arr(left_side) = arr(right_side);
arr(right_side) = temp;
left_side += 1;
right_side -= 1;
}
}
arr;
}
def main(args: Array[String]): Unit = {
val nums = Array(20, 12, 23, 17, 7, 8, 10, 2, 1);
println("\nOriginal Array elements:")
// Print all the array elements
for (x <- nums) {
print(s"${x}, ")
}
//println(Arrays.toString(nums));
val result = test(nums);
println("\nArray, after separating even and odd numbers:");
// Print all the array elements
for (x <- result) {
print(s"${x}, ")
}
}
}
Sample Output:
Original Array elements: 20, 12, 23, 17, 7, 8, 10, 2, 1, Array, after separating even and odd numbers: 20, 12, 2, 10, 8, 7, 17, 23, 1,
Scala Code Editor :
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Previous: Write a Java program to arrange the elements of a given array of integers where all positive integers appear before all the negative integers.
Next: 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.
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