mirror of
https://github.com/TheAlgorithms/Java.git
synced 2025-12-19 07:00:35 +08:00
@@ -24,16 +24,16 @@ public class Damm {
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* calculation.
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*/
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private static final byte[][] DAMM_TABLE = {
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{ 0, 3, 1, 7, 5, 9, 8, 6, 4, 2 },
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{ 7, 0, 9, 2, 1, 5, 4, 8, 6, 3 },
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{ 4, 2, 0, 6, 8, 7, 1, 3, 5, 9 },
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{ 1, 7, 5, 0, 9, 8, 3, 4, 2, 6 },
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{ 6, 1, 2, 3, 0, 4, 5, 9, 7, 8 },
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{ 3, 6, 7, 4, 2, 0, 9, 5, 8, 1 },
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{ 5, 8, 6, 9, 7, 2, 0, 1, 3, 4 },
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{ 8, 9, 4, 5, 3, 6, 2, 0, 1, 7 },
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{ 9, 4, 3, 8, 6, 1, 7, 2, 0, 5 },
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{ 2, 5, 8, 1, 4, 3, 6, 7, 9, 0 },
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{0, 3, 1, 7, 5, 9, 8, 6, 4, 2},
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{7, 0, 9, 2, 1, 5, 4, 8, 6, 3},
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{4, 2, 0, 6, 8, 7, 1, 3, 5, 9},
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{1, 7, 5, 0, 9, 8, 3, 4, 2, 6},
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{6, 1, 2, 3, 0, 4, 5, 9, 7, 8},
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{3, 6, 7, 4, 2, 0, 9, 5, 8, 1},
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{5, 8, 6, 9, 7, 2, 0, 1, 3, 4},
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{8, 9, 4, 5, 3, 6, 2, 0, 1, 7},
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{9, 4, 3, 8, 6, 1, 7, 2, 0, 5},
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{2, 5, 8, 1, 4, 3, 6, 7, 9, 0},
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};
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/**
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@@ -99,20 +99,13 @@ public class Damm {
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private static void generateAndPrint(String input) {
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String result = addDammChecksum(input);
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System.out.println(
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"Generate and add checksum to initial value '" +
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input +
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"'. Result: '" +
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result +
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"'"
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);
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"Generate and add checksum to initial value '" + input + "'. Result: '" + result + "'");
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}
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private static void checkInput(String input) {
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Objects.requireNonNull(input);
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if (!input.matches("\\d+")) {
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throw new IllegalArgumentException(
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"Input '" + input + "' contains not only digits"
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);
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throw new IllegalArgumentException("Input '" + input + "' contains not only digits");
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}
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}
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