The weird number 48 . Text Decompressor | code coach

Question

So I solved this code coach Text Decompressor and I don't know that's up with that 48 on the jagged for loop in line 12

using System;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
char[] text = Console.ReadLine().ToCharArray();
for(int i = 0;i <= text.Length; i += 2)
{
for (int a = 0;a < (int)text[i + 1] - 48;a++)
{
Console.Write(text[i]);
}
}
}
}
}

Answer 1

48 is a number of '0' character in asci table. When you subtract 48 from a code of a character (from 0 to 9) it is like cast from char to int. More explicit way to do it -
Convert.ToInt32(text[i+1]);

Answer 2

You need to decompress text. The compressed version has a number next to each symbol/letter, representing the amount of time that symbol should appear.
For example, a2b3 is the compressed version of aabbb

Task:
Write a program that takes the compressed text as input and outputs the decompressed version.

Input Format:
A single string with letters/symbols, each followed by a number.

Output Format:
A string, representing the decompressed text.

Sample Input:
k2&4b1

Sample Output:
kk&&&&b

Answer 3

compressed_string = input()

decompressed_string = " "
for i in compressed_string:
if not i.isdigit():
decompressed_string += i * int(compressed_string[(compressed_string.index(i)+1)])

print(decompressed_string)

Answer 4

Task condition is not available for those who do not have pro-status. It will be easier if you write the condition here.

Answer 5

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