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package class06;
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public class Code05_Nim {
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// 保证arr是正数数组
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public static void printWinner(int[] arr) {
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int eor = 0;
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for (int num : arr) {
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eor ^= num;
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}
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if (eor == 0) {
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System.out.println("后手赢");
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} else {
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System.out.println("先手赢");
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}
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}
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}
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