45 lines
1.4 KiB
Java
45 lines
1.4 KiB
Java
import java.util.Arrays;
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public class ABC{
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private static void swap(int i, int j, Object... arr){
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Object tmp = arr[i];
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arr[i] = arr[j];
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arr[j] = tmp;
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}
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public static boolean canMakeWord(String word, String... blocks) {
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if(word.length() == 0)
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return true;
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char c = Character.toUpperCase(word.charAt(0));
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for(int i = 0; i < blocks.length; i++) {
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String b = blocks[i];
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if(Character.toUpperCase(b.charAt(0)) != c && Character.toUpperCase(b.charAt(1)) != c)
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continue;
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swap(0, i, blocks);
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if(canMakeWord(word.substring(1), Arrays.copyOfRange(blocks, 1, blocks.length)))
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return true;
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swap(0, i, blocks);
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}
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return false;
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}
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public static void main(String[] args){
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String[] blocks = {"BO", "XK", "DQ", "CP", "NA",
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"GT", "RE", "TG", "QD", "FS",
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"JW", "HU", "VI", "AN", "OB",
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"ER", "FS", "LY", "PC", "ZM"};
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System.out.println("\"\": " + canMakeWord("", blocks));
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System.out.println("A: " + canMakeWord("A", blocks));
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System.out.println("BARK: " + canMakeWord("BARK", blocks));
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System.out.println("book: " + canMakeWord("book", blocks));
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System.out.println("treat: " + canMakeWord("treat", blocks));
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System.out.println("COMMON: " + canMakeWord("COMMON", blocks));
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System.out.println("SQuAd: " + canMakeWord("SQuAd", blocks));
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System.out.println("CONFUSE: " + canMakeWord("CONFUSE", blocks));
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}
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}
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