Find_the_middle_element.js

// Kata link:
// https://www.codewars.com/kata/545a4c5a61aa4c6916000755/

// -------------------------------------
// Instructions:
/*
As a part of this Kata, you need to create a function that when provided with
a triplet, returns the index of the numerical element that lies between the 
other two elements.

The input to the function will be an array of three distinct numbers (Haskell: a tuple).

For example:

	gimme([2, 3, 1]) => 0
2 is the number that fits between 1 and 3 and the index of 2 in the input array is 0.

Another example (just to make sure it is clear):

	gimme([5, 10, 14]) => 1
10 is the number that fits between 5 and 14 and the index of 10 in the input array is 1.
*/
// -------------------------------------
// Solution 1:

let gimme = function (inputArray) {
  for (let i = 0; i < inputArray.length; i++) {
    if (
      Math.min(...inputArray) !== inputArray[i] &&
      Math.max(...inputArray) !== inputArray[i]
    ) {
      return i;
    }
  }
};

// Solution 2:

//let gimme = function (inputArray) {
//  return inputArray.indexOf(
//    inputArray.concat().sort(function (a, b) {
//      return a - b;
//    })[1]
//  );
//};

// -------------------------------------
// Basic Tests
console.log("Finds the index of middle element");
console.log(gimme([2, 3, 1]) === 0);
console.log(gimme([5, 10, 14]) === 1);