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swap(Object[]); //Êý×ÖÓ¦µ±Ö»°üº¬Á½¸öÔªËØ
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void swap(Integer a, Integer b)
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int temp = a.value;
a.value = b.value;
b.value = temp;
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a.value ^= b.value;
b.value ^= a.value;
a.value ^= b.value;
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a.value = a.value + b.value;
b.value = a.value - b.value;
a.value = a.value - b.value;
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