Finding a number that repeats even no of times where all the other numbers repeat odd no of times
2012-07-26 12:41
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看Careercup上一个美国女人问的
阿三哥们讨论半天 还是没有时间O(n)和空间O(1)的解法
时间O(n)最好的方法就是哈希方法，最后判断奇偶时候用x^0x01判断
空间O(1)的方法就是快速排序了
看他们讨论了半天 真是欢快
阿三哥们讨论半天 还是没有时间O(n)和空间O(1)的解法
时间O(n)最好的方法就是哈希方法，最后判断奇偶时候用x^0x01判断
空间O(1)的方法就是快速排序了
看他们讨论了半天 真是欢快
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