原文:

给定字符串 str，任务是打印字符串的中间字符。如果字符串的长度是偶数，那么会有两个中间字符，我们需要打印第二个中间字符。

示例:

输入: str = "java" 输出: v 解释: 给定字符串的长度是偶数。 因此，会有两个中间字符‘a’和‘v’，我们打印第二个中间字符。

输入: str = "geeksforgeeks" 输出: o 解释: 给定字符串的长度是奇数。 因此，只有一个中间字符，我们打印该中间字符。

进场:

  1. 获取要找到中间字符的字符串。
  2. 计算给定字符串的长度。
  3. 查找字符串的中间索引。
  4. 现在，使用 java 中的函数

下面是上述方法的实现:

c 

// c   program to implement
// the above approach
#include
using namespace std;
// function that prints the middle
// character of a string
void  printmiddlecharacter(string str)
{
    // finding string length
    int len = str.size();
    // finding middle index of string
    int middle = len / 2;
    // print the middle character
    // of the string
    cout << str[middle];
}
// driver code
int main()
{
    // given string str
    string str = "geeksforgeeks";
    // function call
    printmiddlecharacter(str);
    return 0;
}
// this code is contributed by sapnasingh

java 语言(一种计算机语言，尤用于创建网站)

// java program for the above approach
class gfg {
    // function that prints the middle
    // character of a string
    public static void
    printmiddlecharacter(string str)
    {
        // finding string length
        int len = str.length();
        // finding middle index of string
        int middle = len / 2;
        // print the middle character
        // of the string
        system.out.println(str.charat(middle));
    }
    // driver code
    public static void
    main(string args[])
    {
        // given string str
        string str = "geeksforgeeks";
        // function call
        printmiddlecharacter(str);
    }
}

python 3

# python3 program for the above approach
# function that prints the middle
# character of a string
def printmiddlecharacter(str):
    # finding string length
    length = len(str);
    # finding middle index of string
    middle = length // 2;
    # print the middle character
    # of the string
    print(str[middle]);
# driver code
# given string str
str = "geeksforgeeks";
# function call
printmiddlecharacter(str);
# this code is contributed by sapnasingh4991

c

// c# program for the above approach
using system;
class gfg{
// function that prints the middle
// character of a string
public static void printmiddlechar(string str)
{
    // finding string length
    int len = str.length;
    // finding middle index of string
    int middle = len / 2;
    // print the middle character
    // of the string
    console.writeline(str[middle]);
}
// driver code
public static void main(string []args)
{
    // given string str
    string str = "geeksforgeeks";
    // function call
    printmiddlechar(str);
}
}
// this code is contributed by amal kumar choubey

java 描述语言

output: 

o

时间复杂度: o(1) 辅助空间: o(1)

麻将胡了pg电子网站的版权属于：月萌api www.moonapi.com，转载请注明出处

本文链接：http://www.moonapi.com/news/38728.html