[Jobdu] 题目1516 : 调整数组顺序使奇数位于偶数前面

void diffOddAndEven(int a[], int n) {
    int low = 0, high = n - 1;
    int pivot;
    while (low < high) {
        while (a[high] % 2 == 0 && low < high)
            high--;
        while (a[low] % 2 == 1 && low < high)
            low++;
        pivot = a[low];
        a[low] = a[high];
        a[high] = pivot;
    }
}