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从阵列 O(n) 中删除全部零, 没有额外内存
原标题:Remove all zeros from array O(n), no extra memory
  • 时间:2012-05-25 10:12:17
  •  标签:
  • algorithm

Could你建议我用最佳算法从O(n) 时间和不含外部内存的给定阵列中删除所有零。 例如, 1, 2 0 0 3, 2 0 2 2 变成 1, 2 3, 2 2

最佳回答

使用两个指针 - 1个用于读取,1个用于写入。

  • Iterate with the reader pointer on the array - if the element is zero increase only it.
  • If the element is not zero - write it and increase both pointers.
问题回答

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