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Summation with Anonymous Functions

Sumit Rawal answered on May 23, 2023 Popularity 1/10 Helpfulness 1/10

answer Summation with Anonymous Functions

Summation with Anonymous Functions

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// Higher-order sum function
def sum(f: Int => Int, a: Int, b: Int): Int ={
  if(a>b) 0
  else f(a) + sum(f, a+1, b)
}

// Helper function
def id(x: Int): Int = x

def cube(x: Int): Int = x*x*x

def factorial(x: Int): Int = if (x==0) 1 else x * factorial(x-1)

// Summation Functions
def sumOfInts(a: Int, b: Int) = sum(id, a, b)
def sumofCubes(a: Int, b: Int) = sum(cube,a,b)
def sumOfFactorials(a: Int, b:Int) = sum(factorial,a,b)

Popularity 1/10 Helpfulness 1/10 Language scala

Source: Grepper

Tags: scala

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Contributed on May 23 2023

Sumit Rawal

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