Nadesłany przez Tomasz Lubiński, 29 sierpnia 2007 01:00
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UPCE.java:
//www.algorytm.org //Konwersja pomiedzy UPC-A i UPC-E //(c)2007 by Tomasz Lubinski public class UPCE { //return 0 if check digit is correct, -1 otherwise private static boolean checkControlDigit(int upca[]) { int sum = 3 * upca[0] + 1 * upca[1] + 3 * upca[2] + 1 * upca[3] + 3 * upca[4] + 1 * upca[5] + 3 * upca[6] + 1 * upca[7] + 3 * upca[8] + 1 * upca[9] + 3 * upca[10]; sum %= 10; sum = 10 - sum; sum %= 10; if (sum != upca[11]) { return false; } return true; } //UPC-E => UPC-A public static String convertToUPCA(String upce_) { int i; int upce[] = new int[8]; int upca[] = new int[12]; String result = ""; //check length of code if (upce_.length() != 8) { return "Nieprawidlowa dlugosc kodu UPC-E (powinno byc 8 znakow)"; } //convert chars to digits for (i=0; i<8; i++) { upce[i] = Integer.parseInt(""+upce_.charAt(i)); } //check system number if ((upce[0] != 0) && (upce[0] != 1)) { return "Numer systemu UPC-A musi wynosic 0 badz 1"; } //convert UPC-E to UPC-A if ((upce[6] >= 0) && (upce[6] <= 2)) { upca[3] = upce[6]; upca[4] = 0; upca[5] = 0; upca[6] = 0; upca[7] = 0; upca[8] = upce[3]; upca[9] = upce[4]; upca[10] = upce[5]; } else if ((upce[6] == 3) && (upce[3] >= 3) && (upce[3] <= 9)) { upca[3] = upce[3]; upca[4] = 0; upca[5] = 0; upca[6] = 0; upca[7] = 0; upca[8] = 0; upca[9] = upce[4]; upca[10] = upce[5]; } else if (upce[6] == 4) { upca[3] = upce[3]; upca[4] = upce[4]; upca[5] = 0; upca[6] = 0; upca[7] = 0; upca[8] = 0; upca[9] = 0; upca[10] = upce[5]; } else if ((upce[6] >= 5) && (upce[6] <= 9)) { upca[3] = upce[3]; upca[4] = upce[4]; upca[5] = upce[5]; upca[6] = 0; upca[7] = 0; upca[8] = 0; upca[9] = 0; upca[10] = upce[6]; } else { return "Nieprawidlowy kod UPC-E"; } //copy two first digits of producer code upca[1] = upce[1]; upca[2] = upce[2]; //copy system numer and chec digit upca[0] = upce[0]; upca[11] = upce[7]; //control check digit if (checkControlDigit(upca) != true) { return "Nieprawidlowa suma kontrolna"; } //convert digits to chars for (i=0; i<12; i++) { result += upca[i]; } return result; } // UPC-A => UPC-E public static String convertToUPCE(String upca_) { int i; int upce[] = new int[8]; int upca[] = new int[12]; String result = ""; //check code length if (upca_.length() != 12) { return "Nieprawidlowa dlugosc kodu UPC-A (powinno byc 12 znakow)"; } //convert chars to digits for (i=0; i<12; i++) { upca[i] = Integer.parseInt(""+upca_.charAt(i)); } //control check digit if (checkControlDigit(upca) != true) { return "Nieprawidlowa suma kontrolna"; } //check system number if ((upca[0] != 0) && (upca[0] != 1)) { return "Numer systemu UPC-A musi wynosic 0 badz 1"; } //convert UPC-A to UPC-E if ((upca[3] >= 0) && (upca[3] <= 2) && (upca[4] == 0) && (upca[5] == 0) && (upca[6] == 0) && (upca[7] == 0)) { upce[3] = upca[8]; upce[4] = upca[9]; upce[5] = upca[10]; upce[6] = upca[3]; } else if ((upca[3] >= 3) && (upca[3] <= 9) && (upca[4] == 0) && (upca[5] == 0) && (upca[6] == 0) && (upca[7] == 0) && (upca[8] == 0)) { upce[3] = upca[3]; upce[4] = upca[9]; upce[5] = upca[10]; upce[6] = 3; } else if ((upca[5] == 0) && (upca[6] == 0) && (upca[7] == 0) && (upca[8] == 0) && (upca[9] == 0)) { upce[3] = upca[3]; upce[4] = upca[4]; upce[5] = upca[10]; upce[6] = 4; } else if ((upca[10] >= 5) && (upca[10] <= 9) && (upca[6] == 0) && (upca[7] == 0) && (upca[8] == 0) && (upca[9] == 0)) { upce[3] = upca[3]; upce[4] = upca[4]; upce[5] = upca[5]; upce[6] = upca[10]; } else { return "Tego kodu UPC-A nie można przekonwertować do UPC-E"; } //copy two first digits of producer code upce[1] = upca[1]; upce[2] = upca[2]; //copy system numer and check digit upce[0] = upca[0]; upce[7] = upca[11]; //convert digits to chars for (i=0; i<8; i++) { result += upce[i]; } return result; } /** * @param args */ public static void main(String[] args) { String upca; String upce; int i; System.out.println("1. UPC-A => UPCE-E"); System.out.println("2. UPC-E => UPC-A"); i = Console.readInt(""); if (i==1) { System.out.println("Podaj kod UPC-A"); upca = Console.readString(); upce = convertToUPCE(upca); System.out.println("Rownowazny kod UPC-E to:"); System.out.println(upce); } else { System.out.println("Podaj kod UPC-E"); upce = Console.readString(); upca = convertToUPCA(upce); System.out.println("Rownowazny kod UPC-A to:"); System.out.println(upca); } } }