From 32419d7d24c3bacf94c01898ee0f60079b46ebd3 Mon Sep 17 00:00:00 2001
From: Shougo-Fukawa <shougo_fukawa@dwango.co.jp>
Date: Tue, 30 Apr 2024 12:10:25 +0900
Subject: [PATCH 1/3] =?UTF-8?q?=E3=83=A9=E3=83=B3=E3=82=AD=E3=83=B3?=
 =?UTF-8?q?=E3=82=B0=E3=81=AE=E5=AE=9F=E8=A3=85=E5=AE=8C=E4=BA=86?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Dockerfile   |  0
 app.js       | 43 +++++++++++++++++++++++++++++++++++++++++++
 compose.yaml |  0
 3 files changed, 43 insertions(+)
 mode change 100644 => 100755 Dockerfile
 mode change 100644 => 100755 app.js
 mode change 100644 => 100755 compose.yaml

diff --git a/Dockerfile b/Dockerfile
old mode 100644
new mode 100755
diff --git a/app.js b/app.js
old mode 100644
new mode 100755
index ad9a93a..7c81bcf
--- a/app.js
+++ b/app.js
@@ -1 +1,44 @@
 'use strict';
+const fs = require('node:fs');
+const readline = require('node:readline');
+const rs = fs.createReadStream('./popu-pref.csv');
+const rl = readline.createInterface({ input: rs });
+const prefectureDataMap = new Map(); // key: 都道府県 value: 集計データのオブジェクト
+rl.on('line', lineString => {
+    const columns = lineString.split(',');
+    const year = parseInt(columns[0]);
+    const prefecture = columns[1];
+    const popu = parseInt(columns[3]);
+    if (year === 2016 || year === 2021) {
+        let value = null;
+        if (prefectureDataMap.has(prefecture)) {
+          value = prefectureDataMap.get(prefecture);
+        } else {
+          value = {
+            before: 0,
+            after: 0,
+            change: null
+          };
+        }
+        if (year === 2016) {
+          value.before = popu;
+        }
+        if (year === 2021) {
+          value.after = popu;
+        }
+        prefectureDataMap.set(prefecture, value);
+    }
+});
+rl.on('close', () => {
+    for (const [key, value] of prefectureDataMap) {
+        value.change = value.after / value.before;
+    }
+    //console.log(prefectureDataMap);
+    const rankingArray = Array.from(prefectureDataMap).sort((pair1, pair2) => {
+        return pair2[1].change - pair1[1].change;
+    });
+    const rankingStrings = rankingArray.map(([key, value]) => {
+        return `${key}: ${value.before}=>${value.after} 変化率: ${value.change}`;
+    });
+    console.log(rankingStrings);
+});
\ No newline at end of file
diff --git a/compose.yaml b/compose.yaml
old mode 100644
new mode 100755

From 759392659d6d94f9f9d203a9e274815b7f81e227 Mon Sep 17 00:00:00 2001
From: Shougo-Fukawa <shougo_fukawa@dwango.co.jp>
Date: Tue, 30 Apr 2024 12:22:20 +0900
Subject: [PATCH 2/3] =?UTF-8?q?=E3=83=A9=E3=83=B3=E3=82=AD=E3=83=B3?=
 =?UTF-8?q?=E3=82=B0=E3=81=AE=E5=AE=9F=E8=A3=85?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Dockerfile    | 0
 app.js        | 0
 compose.yaml  | 0
 popu-pref.csv | 0
 4 files changed, 0 insertions(+), 0 deletions(-)
 mode change 100755 => 100644 Dockerfile
 mode change 100755 => 100644 app.js
 mode change 100755 => 100644 compose.yaml
 mode change 100755 => 100644 popu-pref.csv

diff --git a/Dockerfile b/Dockerfile
old mode 100755
new mode 100644
diff --git a/app.js b/app.js
old mode 100755
new mode 100644
diff --git a/compose.yaml b/compose.yaml
old mode 100755
new mode 100644
diff --git a/popu-pref.csv b/popu-pref.csv
old mode 100755
new mode 100644

From 43de46b686cc56145db58cae9dbe579e2773ffc4 Mon Sep 17 00:00:00 2001
From: Shougo-Fukawa <shougo_fukawa@dwango.co.jp>
Date: Tue, 30 Apr 2024 12:34:40 +0900
Subject: [PATCH 3/3] =?UTF-8?q?=E4=BA=BA=E3=81=8C=E6=B8=9B=E3=81=A3?=
 =?UTF-8?q?=E3=81=9F=E5=89=B2=E5=90=88=E3=81=AE=E3=83=A9=E3=83=B3=E3=82=AD?=
 =?UTF-8?q?=E3=83=B3=E3=82=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/app.js b/app.js
index 7c81bcf..6699b4a 100644
--- a/app.js
+++ b/app.js
@@ -35,10 +35,10 @@ rl.on('close', () => {
     }
     //console.log(prefectureDataMap);
     const rankingArray = Array.from(prefectureDataMap).sort((pair1, pair2) => {
-        return pair2[1].change - pair1[1].change;
+        return pair1[1].change - pair2[1].change;
     });
-    const rankingStrings = rankingArray.map(([key, value]) => {
-        return `${key}: ${value.before}=>${value.after} 変化率: ${value.change}`;
+    const rankingStrings = rankingArray.map(([key, value],i) => {
+        return `${i+1}位 ${key}: ${value.before}=>${value.after} 変化率: ${value.change}`;
     });
     console.log(rankingStrings);
 });
\ No newline at end of file