※ 引述《dont (dont)》之銘言：
: 2491. Divide Players Into Teams of Equal Skill
: ## 思路
: chemistry會是最大跟最小的skill相加
: 排序後, 每次從頭尾各取一
: 如果相加的和不等於chemistry就回傳-1
: ## Code
: ```python
: class Solution:
: def dividePlayers(self, skill: List[int]) -> int:
: skill.sort()
: res = 0
: chemistry = skill[0] + skill[-1]
: for i in range(len(skill) // 2):
: if skill[i] + skill[~i] != chemistry:
: return -1
: res += skill[i] * skill[~i]
: return res
: ```
思路:
差不多 先頭尾相加 然後遍歷 有不相等的就return -1
Python Code:
class Solution:
def dividePlayers(self, skill: List[int]) -> int:
skill.sort()
start = 1
end = len(skill) - 2
tmp = skill[0] + skill[-1]
result = skill[0] * skill[-1]
while start < end:
if skill[start] + skill[end] != tmp:
return -1
result += skill[start] * skill[end]
start += 1
end -= 1
return result
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