在python中找到两对数字,使得这两对数字之和的绝对差最小
假设我们有一个数字列表称为nums,我们想要从中选择两对数字,使得这两个数字对之和的绝对差最小。
因此,如果输入为nums = [3, 4, 5, 10, 7],则输出将为1,因为我们可以选择这些对(3 + 7) -(4 + 5)= 1。
为了解决这个问题,我们将遵循以下步骤:
- 距离:=新列表
- for i in range 0 to size of nums – 2, do
- for j in range i + 1 to size of nums – 1, do
- 在距离列表的末尾插入列表 [|nums[i] – nums[j]| , i, j]
- 对距离列表进行排序
- ans:= 1^9
- for i in range 0 to size of distances – 2, do
- [dist, i1, i2] := distances[i]
- j := i + 1
- [dist2, i3, i4] := distances[j]
- while j < size of distances and elements in (i1, i2, i3, i4) are not unique, do
- [dist2, i3, i4] := distances[j]
- j := j + 1
- 如果(i1, i2, i3, i4)中的元素是唯一的,则
- ans:= ans和(dist2 – dist)的最小值
- return ans
- for j in range i + 1 to size of nums – 1, do
让我们看一下以下实现,以获得更好的理解:
示例代码
class Solution:
def solve(self, nums):
distances = []
for i in range(len(nums) - 1):
for j in range(i + 1, len(nums)):
distances.append((abs(nums[i] - nums[j]), i, j))
distances.sort()
ans = 1e9
for i in range(len(distances) - 1):
dist, i1, i2 = distances[i]
j = i + 1
dist2, i3, i4 = distances[j]
while j < len(distances) and len({i1, i2, i3, i4}) != 4:
dist2, i3, i4 = distances[j]
j += 1
if len({i1, i2, i3, i4}) == 4:
ans = min(ans, dist2 - dist)
return ans
ob = Solution()
nums = [3, 4, 5, 10, 7]
print(ob.solve(nums))
输入
[3, 4, 5, 10, 7]
输出
1