class Solution:
def subarraysDivByK(self, A, K):
"""
:type A: List[int]
:type K: int
:rtype: int
"""
l = len(A)
div = [[0 for col in range(l)] for row in range(l)]
sums = [[None for col in range(l)] for row in range(l)]
global cnt
cnt = 0
for i in range(l):
if A[i]%K == 0:
div[i][i] = 1
cnt = cnt+1
def impl(self,st,en):
print(st,en)
if sums[st][en]!=None:
return sums[st][en]
if A[st] == A[en]:
if A[st]%K == 0:
sums[st][st] = A[st]
div[st][st] = 1
print(st,en,sums[st][en])
if sums[st][en]%k == 0:
div[st][en] = 1
cnt = cnt+1
return sums[st][st]
elif st+1==en:
sums[st][en] = A[st]+A[en]
print(st,en,sums[st][en])
if sums[st][en]%K == 0:
div[st][en] = 1
cnt = cnt+1
return sums[st][en]
else:
if sums[st+1][en]==None:
sums[st][en] = impl(self,st+1,en)+A[st]
if sums[st][en-1]==None:
sums[st][en] = impl(self,st,en-1)+A[en]
#sums[st][en] = sums[st+1][en]+ A[st]
print(st,en,sums[st][en])
if sums[st][en]%K == 0:
div[st][en] = 1
cnt = cnt+1
return sums[st][en]
impl(self,0,len(A)-1)
print(cnt)
#print(sums)
最佳答案
您应该在函数impl中添加global cnt，以便全局变量可见。
def impl(self,st,en):
global cnt
...
更多信息请查看:enter link description here .
关于python - 未绑定(bind)本地错误: local variable 'cnt' referenced before assignment，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/54166940/