The US postal barcode is used by the US Postal System to route mail. Each decima

Question

The US postal barcode is used by the US Postal System to route mail. Each decimal digit in the zip code is encoded using a sequence of 5 short and long lines for use by scanners as follows: 0: | | s s s (|: long, s: short) 1: s s s || 2: s s | s | 3: s s | | s 4: s | s s | 5: s | s | s 6: s | | s s 7: | s s s | 8: | s s | s 9: | s | s s A sixth checksum digit is appended: it is computed by summing up the original five digits mod 10. In addition, a long line is added to the beginning and appended to the end. Write a program that reads in a five digit zip code and prints the corresponding postal barcode. Print the code horizontally. e g, the following encodes 13210 (with the check digit of 7). 13210 zip code's postal barcode is^^^^^^^^rightarrow This is not output 1 3 2 1 0 7 rightarrow This is not output

Explanation / Answer

import java.util.Scanner;

public class Barcode {
  
public static void main(String[] args) {
  
Scanner scan = new Scanner(System.in);
String codeStr = scan.nextLine(); //scanning code from user
scan.close();
  
//data for conversion
String data[] = {
"llsss",
"sssll",
"sslsl",
"sslls",
"slssl",
"slsls",
"sllss",
"lsssl",
"lssls",
"lslss"
};
  
int code[] = new int[6];
code[0]= codeStr.charAt(0) - '0'; //converting character to int
code[1]= codeStr.charAt(1) - '0';
code[2]= codeStr.charAt(2) - '0';
code[3]= codeStr.charAt(3) - '0';
code[4]= codeStr.charAt(4) - '0';
code[5]= (code[0] + code[1] + code[2] + code[3] + code[4])%10; //calculate checksum
  
  
String upper="*";//add star at start
for(int i=0;i<6;i++){
for(int j=0;j<5;j++)
{
if(data[code[i]].charAt(j) == 'l'){
upper += "*";
}
else
upper +=" ";
}
}
upper += "*"; //add star at end
  
//calculate how long string will be
int runtime = code.length * data[0].length() + 2;
  
//print upper stars
for(int j=0;j<2;j++){
for(int i=0;i<runtime;i++){
System.out.print(upper.charAt(i));
}
System.out.println();
}
  
//print lower starts
for(int j=0;j<3;j++){
for(int i=0;i<runtime;i++){
System.out.print("*");
}
System.out.println();
}
}
  
}

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