157:用 Read4 读取 N 个字符

src/main/java/com/code/leet/entiy/Reader4.java

@@ -0,0 +1,12 @@
+package com.code.leet.entiy;
+
+/**
+ * @description:
+ * @author: Administrator
+ * @date: 2022/3/19 21:23
+ */
+public class Reader4 {
+    protected int read4(char[] buf4) {
+        return Math.min(buf4.length, 4);
+    }
+}

src/main/java/leetcode/editor/cn/ReadNCharactersGivenRead4.java

@@ -83,6 +83,8 @@
 
 package leetcode.editor.cn;
 
+import com.code.leet.entiy.Reader4;
+
 //157:用 Read4 读取 N 个字符
 public class ReadNCharactersGivenRead4 {
     public static void main(String[] args) {