From e90e9bb7567c9161136ac10a67b1343130577825 Mon Sep 17 00:00:00 2001
From: Chloekkk <skdusdl8804@gmail.com>
Date: Sun, 30 Jan 2022 17:43:34 +0900
Subject: [PATCH] week6 nkim

---
 .../\354\213\244\355\214\250\354\234\250.js"  | 21 ++++++++++++
 ...0 \353\215\224\355\225\230\352\270\260.js" | 16 +++++++++
 .../\354\262\264\354\234\241\353\263\265.js"  | 34 +++++++++++++++++++
 3 files changed, 71 insertions(+)
 create mode 100644 "nkim/week6/\354\213\244\355\214\250\354\234\250.js"
 create mode 100644 "nkim/week6/\354\227\206\353\212\224 \354\210\253\354\236\220 \353\215\224\355\225\230\352\270\260.js"
 create mode 100644 "nkim/week6/\354\262\264\354\234\241\353\263\265.js"

diff --git "a/nkim/week6/\354\213\244\355\214\250\354\234\250.js" "b/nkim/week6/\354\213\244\355\214\250\354\234\250.js"
new file mode 100644
index 0000000..1105e9a
--- /dev/null
+++ "b/nkim/week6/\354\213\244\355\214\250\354\234\250.js"
@@ -0,0 +1,21 @@
+function solution(N, stages) {
+  var answer = [];
+  const report = {};
+  [...new Array(N)].forEach((_, i) => {
+    report[i + 1] = { stop: 0, dare: 0, fail_rate: 0 };
+  });
+
+  Object.keys(report).forEach((stage) => {
+    report[stage].stop = stages.filter((s) => s == stage).length;
+    report[stage].dare = stages.filter((s) => s >= stage).length;
+  });
+  Object.entries(report).forEach(([stage, val]) => {
+    const { stop, dare } = val;
+    report[stage].fail_rate = stop / dare;
+  });
+  answer = Object.keys(report).sort(
+    (i, j) => report[j].fail_rate - report[i].fail_rate
+  );
+  answer = answer.map((data) => parseInt(data));
+  return answer;
+}
diff --git "a/nkim/week6/\354\227\206\353\212\224 \354\210\253\354\236\220 \353\215\224\355\225\230\352\270\260.js" "b/nkim/week6/\354\227\206\353\212\224 \354\210\253\354\236\220 \353\215\224\355\225\230\352\270\260.js"
new file mode 100644
index 0000000..9b10564
--- /dev/null
+++ "b/nkim/week6/\354\227\206\353\212\224 \354\210\253\354\236\220 \353\215\224\355\225\230\352\270\260.js"	
@@ -0,0 +1,16 @@
+function solution(numbers) {
+  var answer = 0;
+  const numObj = {};
+
+  [...new Array(10)].forEach((_, i) => {
+    numObj[i] = 0;
+  });
+  numbers.forEach((num) => {
+    numObj[num]++;
+  });
+  Object.entries(numObj).forEach(([num, cnt]) => {
+    if (!cnt) answer += parseInt(num);
+  });
+
+  return answer;
+}
diff --git "a/nkim/week6/\354\262\264\354\234\241\353\263\265.js" "b/nkim/week6/\354\262\264\354\234\241\353\263\265.js"
new file mode 100644
index 0000000..9ae35b2
--- /dev/null
+++ "b/nkim/week6/\354\262\264\354\234\241\353\263\265.js"
@@ -0,0 +1,34 @@
+function solution(n, lost, reserve) {
+  var answer = n - lost.length;
+  const lost_arr = lost.sort((a, b) => a - b);
+  const re_arr = reserve
+    .filter((re, i) => {
+      const idx = lost_arr.indexOf(re);
+      const flag = idx != -1;
+      if (flag) {
+        lost_arr.splice(idx, 1);
+        answer++;
+      }
+      return !flag;
+    })
+    .sort((a, b) => a - b);
+
+  re_arr.forEach((re, i) => {
+    let idx;
+    idx = lost_arr.indexOf(re - 1);
+    console.log(idx);
+    if (idx != -1) {
+      lost_arr.splice(idx, 1);
+      answer++;
+      return false;
+    }
+    idx = lost_arr.indexOf(re + 1);
+    if (idx != -1) {
+      lost_arr.splice(idx, 1);
+      answer++;
+      return false;
+    }
+  });
+
+  return answer;
+}