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<script> function swap(a,b) { //a= [b,b=a][0]; a = a^b; b = b^a; a = a^b return "a="+a+"b="+b; } alert(swap(4,5)); </script>
交换两个数
原文地址:http://www.cnblogs.com/pmx-pmx/p/4942746.html