10.11: implementation(단어 만들기)

baekjoon/1148.js

@@ -0,0 +1,94 @@
+// 단어 만들기 : 구현, 문자열
+const input = require("fs").readFileSync(0, "utf-8").trim().split("\n");
+let idx = 0;
+const dict = new Map();
+const answer = [];
+
+function getAlphaMap(string) {
+  return string.split("").reduce((acc, curr) => {
+    if (acc.get(curr) === undefined) {
+      acc.set(curr, 1);
+    } else {
+      acc.set(curr, acc.get(curr) + 1);
+    }
+    return acc;
+  }, new Map());
+}
+
+function compare(map1, map2, count) {
+  // map1: 비교할 것
+  const list = [...map1];
+  const result = [];
+  for (const [char, count1] of list) {
+    const count2 = map2.get(char);
+    if (count2 === undefined) {
+      return false;
+    } else {
+      if (count2 < count1) {
+        return false;
+      } else {
+        result.push(char);
+      }
+    }
+  }
+  for (const char of result) {
+    if (count.get(char) === undefined) {
+      count.set(char, 1);
+    } else {
+      count.set(char, count.get(char) + 1);
+    }
+  }
+  return true;
+}
+
+// 사전 Map 만들기: O(n)
+for (; idx < input.length; idx++) {
+  const curr = input[idx];
+  if (curr === "-") {
+    idx++;
+    break;
+  }
+  dict.set(curr, getAlphaMap(curr));
+}
+
+const dictList = [...dict];
+
+// 각 퍼즐에 대해서 순회 O(m)
+for (; idx < input.length; idx++) {
+  const currPuzzle = input[idx];
+  if (currPuzzle === "#") {
+    break;
+  }
+
+  const puzzleAlpha = getAlphaMap(currPuzzle);
+  const count = [...puzzleAlpha].reduce((acc, [char]) => {
+    acc.set(char, 0);
+    return acc;
+  }, new Map());
+
+  // puzzleAlpha(기준)와 wordAlpha 비교: O(n * 10)
+  for (let i = 0; i < dictList.length; i++) {
+    const [_word, wordAlpha] = dictList[i];
+    compare(wordAlpha, puzzleAlpha, count);
+  }
+
+  // 정리
+  const sorted = [...count].sort((a, b) => b[1] - a[1]);
+  const [max, min] = [sorted[0][1], sorted[sorted.length - 1][1]];
+  const [maxChar, minChar] = [[], []];
+
+  for (const [char, count] of sorted) {
+    if (count === max) {
+      maxChar.push(char);
+    }
+    if (count === min) {
+      minChar.push(char);
+    }
+  }
+
+  answer.push(`${minChar.sort().join("")} ${min} ${maxChar.sort().join("")} ${max}`);
+}
+
+console.log(answer.join("\n"));
+
+// Map을 spread할 일이 많아서 Object보다 Map을 사용