Scala Programming: Pairs of elements in an array whose sum is equal to a specified number
Scala Programming Array Exercise-35 with Solution
Write a Scala program to find all pairs of elements in an array whose sum is equal to a specified number.
Sample Solution:
Scala Code:
object Scala_Array {
def test(inputArray: Array[Int], inputNumber: Int): Unit = {
println("Pairs of elements and their sum : ");
for (i <- 0 to inputArray.length - 1) {
for (j <- i + 1 to inputArray.length - 1) {
if (inputArray(i) + inputArray(j) == inputNumber) {
println(s"${inputArray(i)} + ${inputArray(j)} = ${inputNumber}");
}
}
}
}
def main(args: Array[String]): Unit = {
val nums1 = Array(2, 7, 4, -5, 11, 5, 20);
println("Original array:")
for (x <- nums1) {
print(s"${x}, ")
}
var n1 = 15;
println(s"\nSpecified Number: ${n1}")
test(nums1, n1);
val nums2 = Array(14, -15, 9, 16, 25, 45, 12, 8);
println("Original array:")
for (x <- nums2) {
print(s"${x}, ")
}
n1 = 30;
println(s"\nSpecified Number: ${n1}")
test(nums2, n1);
}
}
Sample Output:
Original array: 2, 7, 4, -5, 11, 5, 20, Specified Number: 15 Pairs of elements and their sum : 4 + 11 = 15 -5 + 20 = 15 Original array: 14, -15, 9, 16, 25, 45, 12, 8, Specified Number: 30 Pairs of elements and their sum : 14 + 16 = 30 -15 + 45 = 30
Scala Code Editor :
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Previous: 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.
Next: Write a Scala program to find maximum product of two integers in a given array of integers.
What is the difficulty level of this exercise?
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