[公开]北京市呼吸疾病研究所呼吸系统重大疾病智慧诊疗技术的应用研究设备购置项目中标公告——中标原因深度分析

000/Python

/Python/2019/07/29/1829-2997.py
# coding=utf-8
# 1829. 最大数组和 II
# https://leetcode-cn.com/problems/maximize-array-value/
class Solution(object):
def maximizeArrayValue(self, nums):
"""
:type nums: List[int]
:rtype: int
"""
import math
nums = [i - j for i, j in zip(nums, nums[1:])]
nums.sort(reverse=True)
nums = [math.ceil(i / len(nums)) for i in nums]

return sum(nums)

/Python/2019/07/29/328-387.py
# coding=utf-8
# 328. 奇偶问题
# https://leetcode-cn.com/problems/odd-even-linked-list/
# Definition for singly-linked list.
# class ListNode:
# def __init__(self, x):
# self.val = x
# self.next = None

class Solution(object):
def oddEvenList(self, head):
"""
:type head: ListNode
:rtype: ListNode
"""
if not head:
return head

odd_head = head
odd_tail = odd_head
even_head = head.next
even_tail = even_head

while odd_tail.next and even_tail.next:
odd_tail.next = even_tail.next
odd_tail = odd_tail.next
even_tail.next = odd_tail.next
even_tail = even_tail.next

odd_tail.next = even_head

return odd_head

/Python/2019/07/29/367-529.py
# coding=utf-8
# 367. 有效的完全平方根
# https://leetcode-cn.com/problems/valid-perfect-square/

import math

class Solution(object):
def isPerfectSquare(self, num):
"""
:type num: int
:rtype: bool
"""

if num < 2:
return True

for i in range(1, int(math.sqrt(num)) + 2):
if i * i == num:
return True
return False

/Python/2019/07/29/717-1226.py
# coding=utf-8
# 717. 1-bit and 2-bit Characters
# https://leetcode-cn.com/problems/10000-bit-and-20000-bit-characters/

import collections

class Solution(object):
def isOneBitCharacter(self, bits):
"""
:type bits: List[int]
:rtype: bool
"""

count = 0
for i in bits:
if i == 1:
count += 1
if count == 2:
count = 0

return not count

/Python/2019/07/29/927-1612.py
# coding=utf-8
# 927. 三连击
# https://leetcode-cn.com/problems/triangle-attack/
# 给定一个正整数N，表示在N个点上进行三连击，找出最小的攻击次数。
# 例如：N = 5，可以分为(1, 2, 3) (2, 3, 4) (3, 4, 5) 三种方式
# 例如：N = 6，可以分为(1, 2, 3) (2, 3, 4) (3, 4, 5) (4, 5, 6) 四种方式
# 例如：N = 7，可以分为(1, 2, 3) (2, 3, 4) (3, 4, 5) (4, 5, 6) (5, 6, 7) 五种方式
# 例如：N = 10，可以分为(1, 2, 3) (2, 3, 4) (3, 4, 5) (4, 5, 6) (5, 6, 7) (6, 7, 8) (7, 8, 9) (8, 9, 10) 八种方式
# 例如：N = 12，可以分为(1, 2, 3) (2, 3, 4) (3, 4, 5) (4, 5, 6) (5, 6, 7) (6, 7, 8) (7, 8, 9) (8, 9, 10) (9, 10, 11) (10, 11, 12) 10种方式

from collections import Counter

class Solution(object):
def waysToClimb(self, n):
"""
:type n: int
:rtype: int
"""
if n <= 3:
return n
if n == 4:
return 3
if n >= 5:
return self.waysToClimb(n - 2) + self.waysToClimb(n - 3) + self.waysToClimb(n - 4)

def waysToClimb1(self, n):
"""
:type n: