Java: Restore the original string by entering the compressed string with this rule
Java Basic: Exercise-238 with Solution
When characters are consecutive in a string, it is possible to shorten it by replacing them with a certain rule. For example, the character string YYYYY, if it is expressed as # 5 Y, it is compressed by one character.
Write a Java program to restore the original string by entering the compressed string with this rule.
However, the # character does not appear in the restored character string.
Note: The original sentences are uppercase letters, lowercase letters, numbers, symbols, less than 100 letters, and consecutive letters are not more than 9 letters.
Input:
Multiple character strings are given. One string is given per line.
Output: The restored character string for each character on one line.
Visual Presentation:
Sample Solution:
Java Code:
// Importing the Scanner class from java.util package
import java.util.*;
// Main class named "Main"
public class Main {
public static void main(String[] args) {
// Creating a Scanner object to read input from the console
Scanner stdIn = new Scanner(System.in);
// Prompting the user to input the text
System.out.println("Input the text:");
// Reading the input string
String str = stdIn.next();
// Iterating through each character in the input string
for (int i = 0; i < str.length(); ++i) {
// Checking if the current character is '#'
if (str.charAt(i) == '#') {
// Repeating the next character by the specified number of times
for (int j = 0; j < (str.charAt(i + 1) - '0'); ++j) {
// Printing the repeated character
System.out.print(str.charAt(i + 2));
}
// Skipping the processed characters (the count and the repeated character)
i += 2;
} else {
// Printing the current character as it is
System.out.print(str.charAt(i));
}
}
// Printing a new line after processing the input string
System.out.println();
}
}
Sample Output:
Input the text: XY#6Z1#4023 XYZZZZZZ1000023
Flowchart:
Java Code Editor:
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