小小白IS 还是小白no IS# PhotoGear - 摄影器材
P*e
1 楼
https://leetcode.com/problems/read-n-characters-given-read4/description/
The API: int read4(char *buf) reads 4 characters at a time from a file.
The return value is the actual number of characters read. For example, it
returns 3 if there is only 3 characters left in the file.
By using the read4 API, implement the function int read(char *buf, int n)
that reads n characters from the file.
Example 1:
Input: buf = "abc", n = 4
Output: "abc"
Explanation: The actual number of characters read is 3, which is "abc".
Example 2:
Input: buf = "abcde", n = 5
Output: "abcde"
Note:
The read function will only be called once for each test case.
---
根据例子，直接返回输入字符本身不久得了？题目说“能不能解释一下这道题到底要我
们实现什么？
The API: int read4(char *buf) reads 4 characters at a time from a file.
The return value is the actual number of characters read. For example, it
returns 3 if there is only 3 characters left in the file.
By using the read4 API, implement the function int read(char *buf, int n)
that reads n characters from the file.
Example 1:
Input: buf = "abc", n = 4
Output: "abc"
Explanation: The actual number of characters read is 3, which is "abc".
Example 2:
Input: buf = "abcde", n = 5
Output: "abcde"
Note:
The read function will only be called once for each test case.
---
根据例子，直接返回输入字符本身不久得了？题目说“能不能解释一下这道题到底要我
们实现什么？
