"Find index of 0 to be replaced to get maximum length sequence of continuous ones" Code Answer's
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Find index of 0 to be replaced to get maximum length sequence of continuous ones
def findIndexofZero(A):
max_count = 0 # stores maximum number of 1's (including 0)
max_index = -1 # stores index of 0 to be replaced
prev_zero_index = -1 # stores index of previous zero
count = 0 # stores current count of zeros
# consider each index `i` in the list
for i in range(len(A)):
# if the current element is 1
if A[i] == 1:
count = count + 1
else:
# if the current element is 0
# reset count to 1 + number of ones to the left of current 0
count = i - prev_zero_index
# update `prev_zero_index` to the current index
prev_zero_index = i
# update maximum count and index of 0 to be replaced if required
if count > max_count:
max_count = count
max_index = prev_zero_index
# return index of 0 to be replaced or -1 if the list contains all 1's
return max_index
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