word_count

word_count.js

const englishString =
  "The administration will encourage federal data and universities to share data that can drive the administration of automated systems data";

const toSplitBySeparator = (splitTarget, separator) =>
  splitTarget.toLowerCase().split(separator);

const countWord = stringArray => {
  let word = "";
  let count = 0;
  const processingEndWords = [];

  for (let i = 0; i < stringArray.length; i++) {
    word = stringArray[i];
    count = 0;

    for (let j = 0; j < stringArray.length; j++) {
      if (word === stringArray[j]) {
        count++;
      }
    }
    let find = processingEndWords.find(item => word === item);

    if (!find) {
      processingEndWords.push(word);
      console.log(`${word}: ${count}`);
    }
  }
};

countWord(toSplitBySeparator(englishString, " "));

word_count_v2.js

const str =
  "Until last week, Ms. Morales kept the episode to herself. But after another But woman came forward to file. Her a criminal complaint against the former president alleging a sexual assault, Ms. Morales summoned the courage to add her voice.";

const filterToPureWords = englishSentence =>
  englishSentence
    .toLowerCase()
    .replace(/\W/g, " ")
    .split(" ")
    .filter(word => /\w/.test(word));

const saveCountWordToMap = (stringArray, map) => {
  for (let word of stringArray) {
    let count = 0;
    stringArray.find(targetWord => {
      if (word === targetWord) {
        count++;
      }
      map.set(word, count);
    });
  }
  return map;
};

const wordCountMap = new Map();
const result = saveCountWordToMap(filterToPureWords(str), wordCountMap);

console.log(result);

word_count_v3.js

const str =
  "Until last week, Ms. Morales kept the episode to herself. But after another But woman came forward to file. Her a criminal complaint against the former president alleging a sexual assault, Ms. Morales summoned the courage to add her voice.";

const filterToPureWords = englishSentence =>
  englishSentence
    .toLowerCase()
    .replace(/\W/g, " ")
    .split(" ")
    .filter(word => /\w/.test(word));

const countWord = (stringArray, word) =>
  stringArray.filter(item => item === word).length;

const saveToMap = (stringArray, map, countFunc) => {
  for (let word of stringArray) {
    map.set(word, countFunc(stringArray, word));
  }
  return map;
};

const result = saveToMap(filterToPureWords(str), new Map(), countWord);

console.log(result);

word_count_v4.js

const str =
  "independent independent independent similar similar similar similar similar similar successful successful enormous busy basic massive massive massive massive massive sings sings sings sings";

const filterToPureWords = englishSentence =>
  englishSentence
    .toLowerCase()
    .replace(/\W/g, " ")
    .split(" ")
    .filter(word => /\w/.test(word));

const countWord = (stringArray, word) =>
  stringArray.filter(item => item === word).length;

const sortCount = ({ sortTarget, desc }) => {
  if (desc) {
    return sortTarget.sort(
      (compare1, compare2) =>
        Object.values(compare2)[0] - Object.values(compare1)[0]
    );
  }
  return sortTarget.sort(
    (compare1, compare2) =>
      Object.values(compare1)[0] - Object.values(compare2)[0]
  );
};

const saveToArray = (stringArray, countFunc) => {
	const arrayWithWordCounts = []
  for (let word of stringArray) {
		/**
		 * TODO: how get object key in array ?
		 */
    arrayWithWordCounts.push({ [word]: countFunc(stringArray, word) });
  }
  
  return arrayWithWordCounts;
};

const result = saveToArray(
  filterToPureWords(str),
  countWord
);

sortCount({ sortTarget: result, desc: true });

console.log(result.slice(0, 5));

word_count_v5.js

const str =
  "Until last week, Ms. Morales kept the episode to herself. But after another But woman came forward to file. Her a criminal complaint against the former president alleging a sexual assault, Ms. Morales summoned the courage to add her voice.";

const filterToPureCharacter = englishSentence =>
  Array.from(englishSentence)

const saveCountCharacterToMap = (stringArray, map) => {
  for (let c of stringArray) {
    let count = 0;
    stringArray.find(targetCharacter => {
      if (c === targetCharacter) {
        count++;
        map.set(targetCharacter, count);        
      }
    });
  }
  return map;
};

const characterCountMap = new Map();
const result = saveCountCharacterToMap(filterToPureCharacter(str), characterCountMap);

console.log(result);

• .replace()で文字ではない ., ,, を削除する

の話は仕様には無かった。。

仕様は., ,, を一つの文字としてカウントして欲しいという内容だったので、

., ,, をフィルターする必要はなくなった。
.filter(character => /\w/.test(character)); のところを削除した。

diff:
https://gist.github.com/jinmayamashita/6bd4cc21ada3f502197ada9d25e6f653/revisions#diff-8ff03d2e1306d7e1d86e5f2d06b0474b

repl:
https://repl.it/@jinma/TrustingCalculatingViruses