From c827c1f90d9eb98faf59c2b8c40d04fca9541137 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=9F=A6=E7=BB=8D=E4=B8=A5?= <790604007@qq.com>
Date: Tue, 21 Feb 2023 06:06:59 +0000
Subject: [PATCH] =?UTF-8?q?=E9=9F=A6=E7=BB=8D=E4=B8=A5?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 韦绍严 <790604007@qq.com>
---
 .../bigFile.txt"                              |  1 +
 .../p.js"                                     | 46 +++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 "\351\237\246\347\273\215\344\270\245/\346\226\207\344\273\266\347\263\273\347\273\2373/bigFile.txt"
 create mode 100644 "\351\237\246\347\273\215\344\270\245/\346\226\207\344\273\266\347\263\273\347\273\2373/p.js"

diff --git "a/\351\237\246\347\273\215\344\270\245/\346\226\207\344\273\266\347\263\273\347\273\2373/bigFile.txt" "b/\351\237\246\347\273\215\344\270\245/\346\226\207\344\273\266\347\263\273\347\273\2373/bigFile.txt"
new file mode 100644
index 0000000..d359280
--- /dev/null
+++ "b/\351\237\246\347\273\215\344\270\245/\346\226\207\344\273\266\347\263\273\347\273\2373/bigFile.txt"
@@ -0,0 +1 @@
+cdad
\ No newline at end of file
diff --git "a/\351\237\246\347\273\215\344\270\245/\346\226\207\344\273\266\347\263\273\347\273\2373/p.js" "b/\351\237\246\347\273\215\344\270\245/\346\226\207\344\273\266\347\263\273\347\273\2373/p.js"
new file mode 100644
index 0000000..1da5fe6
--- /dev/null
+++ "b/\351\237\246\347\273\215\344\270\245/\346\226\207\344\273\266\347\263\273\347\273\2373/p.js"
@@ -0,0 +1,46 @@
+// 使用open write close的形式去创建一个大文件,内容从指定的文本中随机取一些（每次取得长度内容可以不一样）,计算出这个大文件出现最多的字符(要使用流的形式).
+
+let fs = require('fs');
+
+let bigFile = fs.openSync("./bigFile.txt", "w");
+let content = "abcdefg";
+let arr = [];
+let x = Math.floor(Math.random() * 10)
+for (let i = 0; i < x; i++) {
+    let a = Math.floor(Math.random() * content.length)
+    arr[i] = content[a];
+    fs.writeSync(bigFile, "" + arr[i] + "");
+}
+fs.close(bigFile);
+
+let rs = fs.createReadStream('./bigFile.txt', 'utf-8');
+
+rs.on("data", function (chunk) {
+    console.log("文件内容：" + chunk)
+    var obj = {}
+    for (let j = 0; j < chunk.length; j++) {
+        var k = chunk.charAt(j);
+        if (obj[k]) {
+            obj[k]++;
+        } else
+            obj[k] = 1;
+    }
+
+    var max = 0;
+    var result = '';
+    for (var key in obj) {
+        if (obj[key] > max) {
+            max = obj[key];
+            result = key;
+        }
+    }
+    console.log("出现次数最多的字符：" + result);
+})
+
+rs.on("end", function () {
+    console.log("----over----");
+});
+
+rs.on("error",function(err){
+    console.log(err);
+});
\ No newline at end of file
-- 
Gitee