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Anonymous
Asked: 2021-08-16T18:23:50+00:00 In:

Logical calculator Codewars JS 8 kyu

https://www.codewars.com/kata/57096af70dad013aa200007b/train/javascript

Your Task

Given an array of Boolean values and a logical operator, return a Boolean result based on sequentially applying the operator to the values in the array.

Examples

  1. booleans = [True, True, False], operator = "AND"
  • True AND True -> True
  • True AND False -> False
  • return False
  1. booleans = [True, True, False], operator = "OR"
  • True OR True -> True
  • True OR False -> True
  • return True
  1. booleans = [True, True, False], operator = "XOR"
  • True XOR True -> False
  • False XOR False -> False
  • return False

Input

  1. an array of Boolean values (1 <= array_length <= 50)
  2. a string specifying a logical operator: "AND", "OR", "XOR"

Output

A Boolean value (True or False).

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2 Answers

  1. Best Answer
    Enlightened
    Logical calculator Codewars JS 8 kyu

    function logicalCalc(array, op) {
    var result = array[0];
    for(var i = 1; i < array.length; i++) {
    if(op == "AND") {
    result = result && array[i];
    }
    if(op == "OR") {
    result = result || array[i];
    }
    if(op == "XOR") {
    result = result != array[i];
    }
    }
    return result;
    }

    • 1
  2. Enlightened

    const operations = {
    AND: (a, b) => a && b,
    OR: (a, b) => a || b,
    XOR: (a, b) => a !== b,
    }

    const logicalCalc = (array, op) => array.reduce(operations[op])

    • 0

Sorry this question is closed.