Min Max

main.js

/**
 * Get the smallest integer in an array.
 * @param  {Array} arr   Array of numbers.
 * @return {Integer}     The smallest integer.
 */
function getMinimum(arr) {
  var minValue = Infinity;

  if (arr instanceof Array) {
    for (var i = 0; i < arr.length; i++) {
      if (arr[i] !== null && arr[i] < minValue)
        minValue = arr[i];
    }
    return minValue;
  } else {
    throw Error('Expecting array, bullshit given.');
  }
}

/**
 * Get the largest integer in an array.
 * @param  {Array} arr Array of numbers.
 * @return {Integer}     The largest integer.
 */
function getMaximum(arr) {
  var maxValue = -Infinity;

  if (arr instanceof Array) {
    for (var i = 0; i < arr.length; i++) {
      if (arr[i] !== null && arr[i] > maxValue)
        maxValue = arr[i]
    }
    return maxValue;
  } else {
    throw Error('Expecting array, bullshit given.');
  }
}