调整数组顺序使奇数位于偶数前面 【微软面试100题 第五十四题】 - tractorman - 博客园



调整数组顺序使奇数位于偶数前面 【微软面试100题 第五十四题】 - tractorman - 博客园

题目要求:

  输入一个整数数组,调整数组中数字的顺序,使得所有奇数位于数组的前半部分,所有偶数位于数组的后半部分。

  要求时间复杂度为O(n).

  参考资料:剑指offer第14题。

题目分析:

  使用两个指针,pBegin和pEnd,pBegin从开头往后遍历,pEnd从结尾往前遍历,当pBegin遇到偶数和pEnd遇到奇数时,交换两个数,然后继续遍历,直到pBegin>pEnd,则结束。


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