将十六进制值字符串转换为 ASCII 值字符串

给定十六进制值字符串作为输入，任务是将给定的十六进制值字符串转换为其对应的 ASCII 格式字符串。

例子：

Input: 6765656b73
Output: geeks

Input:  6176656e67657273
Output: avengers

“十六进制”或简称“十六进制”编号系统使用以 16 为基数的系统。作为 Base-16 系统，有 16 个可能的数字符号。十六进制数使用 16 个符号 {0, 1, 2, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F} 来表示所有数字。这里，(A、B、C、D、E、F)表示(10、11、12、13、14、15)。
ASCII 代表美国信息交换标准代码。 ASCII 是一种在 8 位代码中可用的 256 个插槽内分配字母、数字和其他字符的标准。例如，小写“h”字符（Char）的十进制值为 104，即二进制的“01101000”和十六进制的“68”。
有关更多 ASCII 值，请参阅 ASCII TABLE。

Algorithm:

Initialize final ascii string as empty.
Extract first two characters from the hexadecimal string taken as input.
Convert it into base 16 integer.
Cast this integer to character which is ASCII equivalent of 2 char hex.
Add this character to final string.
Extract next two characters from hexadecimal string and go to step 3.
Follow these steps to extract all characters from hexadecimal string.

编程需要懂一点英语

C++

// C++ program to convert hexadecimal
// string to ASCII format string
#include 
using namespace std;
 
string hexToASCII(string hex)
{
    // initialize the ASCII code string as empty.
    string ascii = "";
    for (size_t i = 0; i < hex.length(); i += 2)
    {
        // extract two characters from hex string
        string part = hex.substr(i, 2);
 
        // change it into base 16 and
        // typecast as the character
        char ch = stoul(part, nullptr, 16);
 
        // add this char to final ASCII string
        ascii += ch;
    }
    return ascii;
}
 
// Driver Code
int main()
{
    // print the ASCII string.
    cout << hexToASCII("6765656b73") << endl;
 
    return 0;
}
 
// This code is contributed by
// sanjeev2552

Java

// Java program to convert hexadecimal
// string to ASCII format string
import java.util.Scanner;
 
public class HexadecimalToASCII {
 
    public static String hexToASCII(String hex)
    {
        // initialize the ASCII code string as empty.
        String ascii = "";
 
        for (int i = 0; i < hex.length(); i += 2) {
 
            // extract two characters from hex string
            String part = hex.substring(i, i + 2);
 
            // change it into base 16 and typecast as the character
            char ch = (char)Integer.parseInt(part, 16);
 
            // add this char to final ASCII string
            ascii = ascii + ch;
        }
 
        return ascii;
    }
    public static void main(String[] args)
    {
        // print the ASCII string.
        System.out.println(hexToASCII("6765656b73"));
    }
}

Python3

# Python3 program to convert hexadecimal
# string to ASCII format string
 
def hexToASCII(hexx):
 
    # initialize the ASCII code string as empty.
    ascii = ""
 
    for i in range(0, len(hexx), 2):
 
        # extract two characters from hex string
        part = hexx[i : i + 2]
 
        # change it into base 16 and
        # typecast as the character
        ch = chr(int(part, 16))
 
        # add this char to final ASCII string
        ascii += ch
     
    return ascii
 
# Driver Code
if __name__ == "__main__":
 
    # print the ASCII string.
    print(hexToASCII("6765656b73"))
 
# This code is contributed by
# sanjeev2552

C#

// C# program to convert hexadecimal
// string to ASCII format string
using System;
 
class GFG
{
    public static String hexToASCII(String hex)
    {
        // initialize the ASCII code string as empty.
        String ascii = "";
 
        for (int i = 0; i < hex.Length; i += 2)
        {
 
            // extract two characters from hex string
            String part = hex.Substring(i, 2);
 
            // change it into base 16 and
            // typecast as the character
            char ch = (char)Convert.ToInt32(part, 16);;
 
            // add this char to final ASCII string
            ascii = ascii + ch;
        }
        return ascii;
    }
     
    // Driver Code
    public static void Main(String[] args)
    {
        // print the ASCII string.
        Console.WriteLine(hexToASCII("6765656b73"));
    }
}
 
// This code is contributed by PrinciRaj1992

Javascript

输出：

geeks