Amethyst Megan G.

src/adagrams.js

@@ -1,15 +1,153 @@
+// import { random } from "core-js/core/number";
+
+const LETTER_POOL = {
+  A: 9,
+  B: 2,
+  C: 2,
+  D: 4,
+  E: 12,
+  F: 2,
+  G: 3,
+  H: 2,
+  I: 9,
+  J: 1,
+  K: 1,
+  L: 4,
+  M: 2,
+  N: 6,
+  O: 8,
+  P: 2,
+  Q: 1,
+  R: 6,
+  S: 4,
+  T: 6,
+  U: 4,
+  V: 2,
+  W: 2,
+  X: 1,
+  Y: 2,
+  Z: 1,
+};
+
+const LETTER_VALUES = {
+  A: 1, 
+  B: 3, 
+  C: 3, 
+  D: 2,
+  E: 1, 
+  F: 4, 
+  G: 2, 
+  H: 4,
+  I: 1, 
+  J: 8, 
+  K: 5, 
+  L: 1,
+  M: 3, 
+  N: 1, 
+  O: 1, 
+  P: 3,
+  Q: 10, 
+  R: 1, 
+  S: 1, 
+  T: 1,
+  U: 1, 
+  V: 4, 
+  W: 4, 
+  X: 8,
+  Y: 4, 
+  Z: 10, 
+};
+
+// create array of all letters
+const createLetterList = letters => {
+  const letterList = [];
+  for (const letter in letters) {
+    for(let i = 0; i < letters[letter]; i++) {
+      letterList.push(letter);
+    }
+  }
+  return letterList;
+}
+
+// generates random letter
+const generateRandomLetter = () => {
+  const letters = createLetterList(LETTER_POOL);
+  const randomLetter = letters[Math.floor(Math.random() * letters.length)];
+  return randomLetter;
+}
+
+// draw 10 letters into hand
+// ensure each drawn letter is drawn no more than the total amount of that letter
 export const drawLetters = () => {
   // Implement this method for wave 1
+  const lettersDrawnForHand = [];
+
+  while (lettersDrawnForHand.length < 10) {
+    let randomLetter = generateRandomLetter();
+    const numberOfOccurences = lettersDrawnForHand.filter(element => element === randomLetter).length
+    if ( numberOfOccurences < LETTER_POOL[randomLetter]){
+      lettersDrawnForHand.push(randomLetter);
+    }
+  }
+  return lettersDrawnForHand;
 };
 
+// handles input that doesn't contain letters in hand
+// handles the correct quantity of letters in hand
 export const usesAvailableLetters = (input, lettersInHand) => {
   // Implement this method for wave 2
+  const letterHandCopy = JSON.parse(JSON.stringify(lettersInHand));
+
+  for(let i = 0; i < input.length; i++) {
+    let letterIndex = letterHandCopy.indexOf(input[i]);
+    if (letterIndex === -1) {
+      return false;
+    }
+    letterHandCopy[letterIndex] = '';
+  }
+  return true;
 };
 
+// scores each letter in the user submitted word
+// if word is 7 or more letters, word gets 8 bonus points
 export const scoreWord = (word) => {
   // Implement this method for wave 3
+  const playerWord = word.toUpperCase()
+  let score = 0;
+
+  for(const letter of playerWord) {
+    score += LETTER_VALUES[letter];
+  }
+  if (playerWord.length > 6) {
+    score += 8;
+  }
+
+  return score;
 };
 
+// finds the highest scoring word from all words submitted
+// in case of tie, will break tie based on shortest length unless word is 10 letters exactly
 export const highestScoreFrom = (words) => {
   // Implement this method for wave 4
+
+  let highestScore = 0;
+  let highestScoringWord = '';
+
+  for(const word of words){
+    let score = scoreWord(word);
+
+    if (score > highestScore) {
+      highestScore = score;
+      highestScoringWord = word;
+    }
+    else if (score === highestScore) {
+      if(highestScoringWord.length != 10 && (word.length === 10 || word.length < highestScoringWord.length)) {
+        highestScoringWord = word
+      }
+    }
+  }
+  return {
+    'score': highestScore,
+    'word': highestScoringWord
+  }
 };

test/adagrams.test.js

@@ -32,6 +32,7 @@ const LETTER_POOL = {
   X: 1,
   Y: 2,
   Z: 1,
+  '': 0
 };
 
 describe("Adagrams", () => {
@@ -120,7 +121,10 @@ describe("Adagrams", () => {
     });
 
     it("returns a score of 0 if given an empty input", () => {
-      throw "Complete test";
+      // throw "Complete test";
+      expectScores({
+        '':0
+      })
     });
 
     it("adds an extra 8 points if word is 7 or more characters long", () => {
@@ -133,7 +137,7 @@ describe("Adagrams", () => {
     });
   });
 
-  describe.skip("highestScoreFrom", () => {
+  describe("highestScoreFrom", () => {
     it("returns a hash that contains the word and score of best word in an array", () => {
       const words = ["X", "XX", "XXX", "XXXX"];
       const correct = { word: "XXXX", score: scoreWord("XXXX") };
@@ -145,7 +149,8 @@ describe("Adagrams", () => {
       const words = ["XXX", "XXXX", "X", "XX"];
       const correct = { word: "XXXX", score: scoreWord("XXXX") };
 
-      throw "Complete test by adding an assertion";
+      // throw "Complete test by adding an assertion";
+      expect(highestScoreFrom(words)).toEqual(correct)
     });
 
     describe("in case of tied score", () => {