Data commit

Task/ABC-problem/JavaScript/abc-problem-1.js

@@ -0,0 +1,37 @@
+var blocks = "BO XK DQ CP NA GT RE TG QD FS JW HU VI AN OB ER FS LY PC ZM";
+
+function CheckWord(blocks, word) {
+   // Makes sure that word only contains letters.
+   if(word !== /([a-z]*)/i.exec(word)[1]) return false;
+   // Loops through each character to see if a block exists.
+   for(var i = 0; i < word.length; ++i)
+   {
+      // Gets the ith character.
+      var letter = word.charAt(i);
+      // Stores the length of the blocks to determine if a block was removed.
+      var length = blocks.length;
+      // The regexp gets constructed by eval to allow more browsers to use the function.
+      var reg = eval("/([a-z]"+letter+"|"+letter+"[a-z])/i");
+      // This does the same as above, but some browsers do not support...
+      //var reg = new RegExp("([a-z]"+letter+"|"+letter+"[a-z])", "i");
+      // Removes all occurrences of the match.
+      blocks = blocks.replace(reg, "");
+      // If the length did not change then a block did not exist.
+      if(blocks.length === length) return false;
+   }
+   // If every character has passed then return true.
+   return true;
+};
+
+var words = [
+   "A",
+   "BARK",
+   "BOOK",
+   "TREAT",
+   "COMMON",
+   "SQUAD",
+   "CONFUSE"
+];
+
+for(var i = 0;i<words.length;++i)
+   console.log(words[i] + ": " + CheckWord(blocks, words[i]));

Task/ABC-problem/JavaScript/abc-problem-2.js

@@ -0,0 +1,48 @@
+(function (strWords) {
+
+    var strBlocks =
+        'BO XK DQ CP NA GT RE TG QD FS JW HU VI AN OB ER FS LY PC ZM',
+        blocks = strBlocks.split(' ');
+
+    function abc(lstBlocks, strWord) {
+        var lngChars = strWord.length;
+
+        if (!lngChars) return [];
+
+        var b = lstBlocks[0],
+            c = strWord[0];
+
+        return chain(lstBlocks, function (b) {
+            return (b.indexOf(c.toUpperCase()) !== -1) ? [
+                (b + ' ').concat(
+                    abc(removed(b, lstBlocks), strWord.slice(1)))
+            ] : [];
+        })
+    }
+
+    // Monadic bind (chain) for lists
+    function chain(xs, f) {
+        return [].concat.apply([], xs.map(f));
+    }
+
+    // a -> [a] -> [a]
+    function removed(x, xs) {
+        var h = xs.length ? xs[0] : null,
+            t = h ? xs.slice(1) : [];
+
+        return h ? (
+            h === x ? t : [h].concat(removed(x, t))
+        ) : [];
+    }
+
+    function solution(strWord) {
+        var strAttempt = abc(blocks, strWord)[0].split(',')[0];
+
+        // two chars per block plus one space -> 3
+        return strWord + ((strAttempt.length === strWord.length * 3) ?
+            ' -> ' + strAttempt : ': [no solution]');
+    }
+
+    return strWords.split(' ').map(solution).join('\n');
+
+})('A bark BooK TReAT COMMON squAD conFUSE');

Task/ABC-problem/JavaScript/abc-problem-3.js

@@ -0,0 +1,7 @@
+A -> NA
+bark -> BO NA RE XK
+BooK: [no solution]
+TReAT -> GT RE ER NA TG
+COMMON: [no solution]
+squAD -> FS DQ HU NA QD
+conFUSE -> CP BO NA FS HU FS RE

Task/ABC-problem/JavaScript/abc-problem-4.js

@@ -0,0 +1,32 @@
+let characters = "BO XK DQ CP NA GT RE TG QD FS JW HU VI AN OB ER FS LY PC ZM";
+let blocks = characters.split(" ").map(pair => pair.split(""));
+
+function isWordPossible(word) {
+  var letters = [...word.toUpperCase()];
+  var length = letters.length;
+  var copy = new Set(blocks);
+
+  for (let letter of letters) {
+    for (let block of copy) {
+      let index = block.indexOf(letter);
+
+      if (index !== -1) {
+        length--;
+        copy.delete(block);
+        break;
+      }
+    }
+
+  }
+  return !length;
+}
+
+[
+  "A",
+  "BARK",
+  "BOOK",
+  "TREAT",
+  "COMMON",
+  "SQUAD",
+  "CONFUSE"
+].forEach(word => console.log(`${word}: ${isWordPossible(word)}`));

Task/ABC-problem/JavaScript/abc-problem-5.js

@@ -0,0 +1,67 @@
+(() => {
+    "use strict";
+
+    // ------------------- ABC BLOCKS --------------------
+
+    // spellWith :: [(Char, Char)] -> [Char] -> [[(Char, Char)]]
+    const spellWith = blocks =>
+        wordChars => !Boolean(wordChars.length) ? [
+            []
+        ] : (() => {
+            const [x, ...xs] = wordChars;
+
+            return blocks.flatMap(
+                b => b.includes(x) ? (
+                    spellWith(
+                        deleteBy(
+                            p => q => (p[0] === q[0]) && (
+                                p[1] === q[1]
+                            )
+                        )(b)(blocks)
+                    )(xs)
+                    .flatMap(bs => [b, ...bs])
+                ) : []
+            );
+        })();
+
+
+    // ---------------------- TEST -----------------------
+    const main = () => {
+        const blocks = (
+            "BO XK DQ CP NA GT RE TG QD FS JW HU VI AN OB ER FS LY PC ZM"
+        ).split(" ");
+
+        return [
+                "", "A", "BARK", "BoOK", "TrEAT",
+                "COmMoN", "SQUAD", "conFUsE"
+            ]
+            .map(
+                x => JSON.stringify([
+                    x, !Boolean(
+                        spellWith(blocks)(
+                            [...x.toLocaleUpperCase()]
+                        )
+                        .length
+                    )
+                ])
+            )
+            .join("\n");
+    };
+
+    // ---------------- GENERIC FUNCTIONS ----------------
+
+    // deleteBy :: (a -> a -> Bool) -> a -> [a] -> [a]
+    const deleteBy = fEq =>
+        x => {
+            const go = xs => Boolean(xs.length) ? (
+                fEq(x)(xs[0]) ? (
+                    xs.slice(1)
+                ) : [xs[0], ...go(xs.slice(1))]
+            ) : [];
+
+            return go;
+        };
+
+    // MAIN ---
+    return main();
+})();