alexandrebvd

function slasher(arr, howMany) {
  if (howMany >= arr.length) {
    return [];
  } else if (howMany === 0) {
    return arr;
  } else {
    arr.splice (0, howMany);
    return arr;
  }
}

alexandrebvd

function mutation(arr) {
  newArray = [];
  newArray[0] = arr[0].toLowerCase();
  newArray[1] = arr[1].toLowerCase();
  console.log(newArray);
  var finalArray = [];
  var numberOfLetters = newArray[1].split('').length;
  for (var i = 0; i < numberOfLetters; i++) {
    finalArray.push(newArray[0].indexOf(newArray[1][i]));
    console.log(newArray[0].indexOf(newArray[1][i]));

alexandrebvd

function bouncer(arr) {
  //callback function for filter method
  function RemoveFalse (value) {
    if (value === '' || value === false || value === null || value === 0 || value === undefined) {
      return false;
    } else {
      return true;
    }
  }
  return arr.filter(RemoveFalse);

alexandrebvd

function where(collection, source) {
  var arr = [];
  var findKeys = Object.keys(source);
  
  for (var i = 0; i < collection.length; i++) {
      var currentObj = collection[i];
      for (var j = 0; j < findKeys.length; j++) {
          var key = findKeys[j];
          if (currentObj.hasOwnProperty(key) && currentObj[key] === source[key]) {
              arr.push(currentObj);

alexandrebvd

function destroyer(arr) {
  var args = Array.prototype.slice.apply(arguments).slice(1);
  for (var i in arr) {
      for (var j in args) {
          if (arr[i] === args[j]) {
              arr.splice(i, 1);
          }
      }
  }
  return arr;

alexandrebvd

function where(arr, num) {
  newArr = arr.sort();
  finalArr = [];
  for (var i = 0; i < newArr.length; i++) {
    if (num > newArr[i] && num < newArr[i+1]) {
      finalArr.push(newArr[i]);
      finalArr.push(num);
    } else {
        finalArr.push(newArr[i]);
    }

alexandrebvd

/*function sumAll(arr) {
    function getMaxOfArray(numArray) {
        return Math.max.apply(null, numArray);
        }
    function getMinOfArray(numArray) {
        return Math.min.apply(null, numArray);
        }
    var max = getMaxOfArray(arr);
    var min = getMinOfArray(arr);
    var n = max - min +1; //quantity of numbers to be added.

alexandrebvd

function diff(arr1, arr2) {
    
function getDiff(arr1, arr2) {
  var newArr = [];
  for (var i = 0; i < arr2.length; i++) {
    if (arr1.indexOf(arr2[i]) === -1) {
      newArr.push(arr2[i]);
    }
  }
  return newArr;

alexandrebvd

function convert(num) {
    //I V X L C D M
    var roman = '';
    var counter = num;
    while (counter !== 0) {
        
        console.log(counter);
        
        if (counter >= 1000) {
            for (var i = 0; i < Math.floor(counter/1000); i++) {

alexandrebvd

function replace(str, before, after) {
    
    var newStr = str.replace(before, after);
    
    if (before[0] === before[0].toUpperCase()) {
        var afterArray = after.split('');
        afterArray.splice(0, 1, after[0].toUpperCase());
        var newAfter = afterArray.join('');
        console.log(newAfter);
        newStr = str.replace(before, newAfter);