题目

        给你一个已经 排好序 的整数数组  和整数  、  、  。对于数组中的每一个元素  ，计算函数值 ，请 按升序返回数组 。

解题

 在时间复杂度为解决问题

def sortTransformedArray(nums, a, b, c):
    def f(x):
        return a * x * x + b * x + c

    n = len(nums)
    result = [0] * n
    left, right = 0, n - 1
    index = n - 1 if a >= 0 else 0

    while left <= right:
        left_val = f(nums[left])
        right_val = f(nums[right])

        if a >= 0:
            if left_val > right_val:
                result[index] = left_val
                left += 1
            else:
                result[index] = right_val
                right -= 1
            index -= 1
        else:
            if left_val < right_val:
                result[index] = left_val
                left += 1
            else:
                result[index] = right_val
                right -= 1
            index += 1

    return result


nums = [-4, -2, 2, 4]
a, b, c = 1, 3, 5
print(sortTransformedArray(nums, a, b, c))

nums = [-4, -2, 2, 4]
a, b, c = -1, 3, 5
print(sortTransformedArray(nums, a, b, c))

[3, 9, 15, 33]
[-23, -5, 1, 7]