resubmit python basic homework

[WTLleo]

拓展作业正在做

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[iphysresearch]

Good Job!!! @WTLleo

[iphysresearch]

Good Job!!! @WTLleo

[iphysresearch]

Good Job!!! @WTLleo

[iphysresearch]

Good Job!!! @WTLleo

Python homework:

• Total questions: 108
• Correct answers: 108
• Score: 100.00%

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Numpy homework:

• Total questions: 10
• Correct answers: 10
• Score: 100.00%

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Pandas homework:

• Total questions: 12
• Correct answers: 12
• Score: 100.00%

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[WTLleo]

434:
class Solution(object):
def countSegments(self, s):
count = 0
for i in range(len(s)):
if s[i] != ' 'and(s[i - 1] == ' 'or i == 0 ) :
count = count+1
return count
1869：
def checkZeroOn(self, s: str) -> bool:
ans=[]
start=s[0]
i=1
count=1
if sum(map(int,list(s)))==len(s):
return True
if sum(map(int,list(s)))==0:
return False
while i<len(s):
if s[i]==start:
count+=1
else:
start=s[i]
ans.append(count)
count=1
i+=1
ans.append(count)
if s[0]=="0":
max0=max(ans[::2])
max1=max(ans[1::2])
if max1>max0:
return True
else:
return False
if s[0]=="1":
#print(ans)
max1=max(ans[::2])
max0=max(ans[1::2])
if max1>max0:
return True
else:
return False

1784 :

class Solution:
def checkOnesSegment(self, s: str) -> bool:
return '01' not in s#s 组成的数字，两种情况：1 全部在最前且连续 或者s 不出现 01字符串

852：

class Solution(object):
def peakIndexInMountainArray(self, arr):
#严格递增。由于是不会出现在最左最右峰值，不必判断边界。
l,r = 0,len(arr)-1
while l <= r:
mid = (l+r) // 2
if arr[mid-1] <arr[mid] and arr[mid+1] < arr[mid]:
return mid
elif arr[mid-1] > arr[mid]:
r = mid
else:
l = mid

162：
class Solution:#二分查找
def findPeakElement(self, nums: List[int]) -> int:
left, right = 0, len(nums) - 1
while left < right:
mid = left + (right - left) // 2
if nums[mid] > nums[mid + 1]:
right = mid
else:
left = mid + 1

[iphysresearch]

Good Job!!! @WTLleo

Python homework:

• Total questions: 108
• Correct answers: 108
• Score: 100.00%

---

Numpy homework:

• Total questions: 10
• Correct answers: 10
• Score: 100.00%

---

Pandas homework:

• Total questions: 12
• Correct answers: 12
• Score: 100.00%

---

[iphysresearch]

Good Job!!! @WTLleo

Python homework:

• Total questions: 108
• Correct answers: 108
• Score: 100.00%

---

Numpy homework:

• Total questions: 10
• Correct answers: 10
• Score: 100.00%

---

Pandas homework:

• Total questions: 12
• Correct answers: 12
• Score: 100.00%

---

[iphysresearch]

@WTLleo
完成Python基础+扩展作业，Matplotlib+Seaborn数据可视化作业，Sklearn建模和调参作业