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Convert the ASCII value sentence to its equivalent string
• Difficulty Level : Easy
• Last Updated : 18 Mar, 2021

Given a string str which represents the ASCII Sentence, the task is to convert this string into its equivalent character sequence.
Examples:

Input: str = “71101101107115”
Output: Geeks
71, 101, 101, 107 are 115 are the unicode values
of the characters ‘G’, ‘e’, ‘e’, ‘k’ and ‘s’ respectively.
Input: str = “104101108108111443211911111410810033”
Output: hello, world!

Approach: Traverse the complete string character by character and concatenate every digit. Once the value of the concatenation comes in the range [32, 122] we print the character value corresponding to this numeric value in the ASCII table. We are taking the range [32, 122] because spaces, uppercase letters, lowercase letters are within this range.
Below is the implementation of the above approach:

## C++

 `// C++ implementation of the approach``#include ``using` `namespace` `std;` `// Function to print the character sequence``// for the given ASCII sentence``void` `asciiToSentence(string str, ``int` `len)``{``    ``int` `num = 0;``    ``for` `(``int` `i = 0; i < len; i++) {` `        ``// Append the current digit``        ``num = num * 10 + (str[i] - ``'0'``);` `        ``// If num is within the required range``        ``if` `(num >= 32 && num <= 122) {` `            ``// Convert num to char``            ``char` `ch = (``char``)num;``            ``cout << ch;` `            ``// Reset num to 0``            ``num = 0;``        ``}``    ``}``}` `// Driver code``int` `main()``{``    ``string str = ``"7110110110711510211111471101101107115"``;``    ``int` `len = str.length();``    ``asciiToSentence(str, len);` `    ``return` `0;``}`

## Java

 `// Java implementation of the approach``class` `GFG {` `    ``// Function to print the character sequence``    ``// for the given ASCII sentence``    ``static` `void` `asciiToSentence(String str, ``int` `len)``    ``{``        ``int` `num = ``0``;``        ``for` `(``int` `i = ``0``; i < len; i++) {` `            ``// Append the current digit``            ``num = num * ``10` `+ (str.charAt(i) - ``'0'``);` `            ``// If num is within the required range``            ``if` `(num >= ``32` `&& num <= ``122``) {` `                ``// Convert num to char``                ``char` `ch = (``char``)num;``                ``System.out.print(ch);` `                ``// Reset num to 0``                ``num = ``0``;``            ``}``        ``}``    ``}` `    ``// Driver code``    ``public` `static` `void` `main(String args[])``    ``{``        ``String str = ``"7110110110711510211111471101101107115"``;``        ``int` `len = str.length();``        ``asciiToSentence(str, len);``    ``}``}`

## Python3

 `# Python3 implementation of the approach` `# Function to print the character sequence``# for the given ASCII sentence``def` `asciiToSentence(string, length) :``    ` `    ``num ``=` `0``;``    ``for` `i ``in` `range``(length) :` `        ``# Append the current digit``        ``num ``=` `num ``*` `10` `+` `(``ord``(string[i]) ``-``                          ``ord``(``'0'``));` `        ``# If num is within the required range``        ``if` `(num >``=` `32` `and` `num <``=` `122``) :` `            ``# Convert num to char``            ``ch ``=` `chr``(num);``            ``print``(ch, end ``=` `"");` `            ``# Reset num to 0``            ``num ``=` `0``;` `# Driver code``if` `__name__ ``=``=` `"__main__"` `:``    ``string ``=` `"7110110110711510211111471101101107115"``;``    ``length ``=` `len``(string);``    ` `    ``asciiToSentence(string, length);` `# This code is contributed by Ryuga`

## C#

 `// C# implementation of the approach``using` `System;``class` `GFG {` `    ``// Function to print the character sequence``    ``// for the given ASCII sentence``    ``static` `void` `asciiToSentence(String str, ``int` `len)``    ``{``        ``int` `num = 0;``        ``for` `(``int` `i = 0; i < len; i++) {` `            ``// Append the current digit``            ``num = num * 10 + (str[i] - ``'0'``);` `            ``// If num is within the required range``            ``if` `(num >= 32 && num <= 122) {` `                ``// Convert num to char``                ``char` `ch = (``char``)num;``                ``Console.Write(ch);` `                ``// Reset num to 0``                ``num = 0;``            ``}``        ``}``    ``}` `    ``// Driver code``    ``public` `static` `void` `Main()``    ``{``        ``String str = ``"7110110110711510211111471101101107115"``;``        ``int` `len = str.Length;``        ``asciiToSentence(str, len);``    ``}``}`

## PHP

 `= 32 && ``\$num` `<= 122)``        ``{` `            ``// Convert num to char``            ``\$ch` `= ``chr``(``\$num``);``            ``print``(``\$ch``);` `            ``// Reset num to 0``            ``\$num` `= 0;``            ``}``        ``}``}` `    ``// Driver code``    ``\$string` `= ``"7110110110711510211111471101101107115"``;``    ``\$length` `= ``strlen``(``\$string``);``    ` `    ``asciiToSentence(``\$string``, ``\$length``);` `// This code is contributed by mits``?>`

## Javascript

 ``
Output:

`GeeksforGeeks`

Time Complexity: O(N) where N is the length of the given string.

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