Editing JS Challenge 2

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Test case details

Title *

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Are you a spammer? (just answer the question)

Preparation code

Preparation code HTML (this will be inserted in the <body> of a valid HTML5 document in standards mode) (useful when testing DOM operations or including libraries)

Include JavaScript libraries as follows: <script src="//cdn.ext/library.js"></script>

Define setup for all tests (variables, functions, arrays or other objects that will be used in the tests) (runs before each clocked test loop, outside of the timed code region) (e.g. define local test variables, reset global variables, clear canvas, etc.) (see FAQ)

Define teardown for all tests (runs after each clocked test loop, outside of the timed code region) (see FAQ)

Code snippets to compare

Test 1

Title

Async (check if this is an asynchronous test)

Code

function scrambler() {
  var match = 0
  var fail = 0;
  var clone = "this is my test string";
  var cloneLow = clone.toLowerCase();
  var cloneArr = cloneLow.split("");
  var orig = "i miss test";
  var origLow = orig.toLowerCase();
  var origArr = origLow.split("");
  for (var i = 0; i < clone.length; i++) {
    if (orig.indexOf(clone[i]) == -1) {
      fail++;
    } else {
      match++;
    }
  }
  if (match >= origArr.length) {
    return true;
  } else {
    return false;
  }
}

Test 2

Title

Async (check if this is an asynchronous test)

Code

function StringScramble(str1, str2) {
  var arr = new Array(26);
  var index;
  var arr_length = arr.length;
  var str1_length = str1.length;
  var str2_length = str2.length;
  // Initialize the array to 0
  for (var i = 0; i < arr_length; i++) {
    arr[i] = 0;
  }

  str2 = str2.toLowerCase();
  // Put char counts into arr for str2
  for (var j = 0; j < str2_length; j++) {
    index = str2[j].charCodeAt(0) - 97;
    arr[index] = arr[index] + 1;
  }

  // Compare str1 to str2
  for (var k = 0; k < str1_length; k++) {
    index = str1[k].charCodeAt(0) - 97;
    if (arr[index] > 0) arr[index] = arr[index] - 1;
  }

  // If any of the elements in the arry is non 0,
  // there's a mismatch and str1 cannot be a permutation of str2
  for (var n = 0; n < arr_length; n++) {
    if (arr[n] != 0) return false;
  }
  return true;
}

Test 3

Title

Async (check if this is an asynchronous test)

Code

var StringScramble = function(str1, str2) {
    var scrambled = str1.split("").sort();
    var expected = str2.split("").sort();
    var result = [];
    var ii = scrambled.length;
    var jj = expected.length;

    for (var i = 0; i < ii; i++) {
      for (var j = 0; j < jj; j++) {
        if (scrambled[i] === expected[j]) {
          result.push(scrambled[i]);
          break;
        }
      }

    }
    var scrambledString = result.toString();
    var expectedString = expected.toString();

    return (scrambledString === expectedString ? "true" : "false");

    };

Test 4

Title

Async (check if this is an asynchronous test)

Code

function StringScramble(str1, str2) {
  var s1 = str1.split(""),
      s2 = str2.split(""),
      l1 = s1.length,
      l2 = s2.length,
      a1 = []; // duplicate array accounts for double letters
  for (var j = 0; j < l1; j++) {
    if (a1[s1[j]]) {
      a1[s1[j]]++;
    } else {
      a1[s1[j]] = 1;
    }
  }

  for (var i = 0; i < l2; i++) {
    if (a1[s2[i]] > 0) {
      a1[s2[i]]--;
    } else {
      return false;
    }
  }
  return true;
}

Test 5

Title

Async (check if this is an asynchronous test)

Code

function StringScramble(str1, str2) {

  // Easy fail, if str1 isn't long enough
  if (str1.length < str2.length) {
    return false;
  }

  // Basic approach:
  // Sort the letters, then compare them
  // one by one, and bail out as soon as
  // we see a letter in s2 that s1 can't supply
  list1 = str1.split('').sort();
  list2 = str2.split('').sort();

  var c1 = list1.pop();
  var c2 = list2.pop();
  while (c1 && c2) {
    if (c1 == c2) {
      c1 = list1.pop();
      c2 = list2.pop();
    } else if (c1 < c2) {
      // str2 just asked for a char str1 can't provide
      return false;
    } else {
      // burn off excess str1 chars
      c1 = list1.pop();
    }
  }

  // a value leftover in c2 means that str1 dried up
  // before matching all of str2's needs.  Fail!
  return (!c2);
}

//trues
//StringScramble("cat", "act")
//StringScramble("cattle", "act")
//StringScramble("abbbba", "b")
//StringScramble("cattle", "")
//StringScramble("", "")
//falses
//StringScramble("cat", "actor")
//StringScramble("cattle", "lettuce")
//StringScramble("", "b")

Test 6

Title

Async (check if this is an asynchronous test)

Code

function StringScramble(str1, str2) {

  var count = 0;

  var lowerstr1 = str1.toLowerCase();
  var lowerstr2 = str2.toLowerCase();
  var splitarr1 = lowerstr1.split("");
  var splitarr2 = lowerstr2.split("");

  for (var i = 0; i < splitarr1.length; i++) {
    for (var j = 0; j < splitarr2.length; j++) {
      if (splitarr2[j] === splitarr1[i]) {
        splitarr1[i] = "*";
        count++;
      }

      if (count == splitarr2.length) {
        return "true";
      }
    }
  }
  return "false"

}

Test 7

Title

Async (check if this is an asynchronous test)

Code

function StringScramble(str1, str2) {
  if (str2.length > str1.length) return false;

  var arr1 = [];
  for (var i = 0, length = str1.length; i < length; i++) {
    arr1.push(str1.charCodeAt(i));
  }

  var arr2 = [];
  for (i = 0, length = str2.length; i < length; i++) {
    arr2.push(str2.charCodeAt(i));
  }

  for (var i = 0; i < arr2.length; i++) {
    if ((x = arr1.indexOf(arr2[i])) > -1) arr1.splice(x, 1);
    else return false;
  }

  return true;
}