diff options
Diffstat (limited to 'count_hidden_sequences.py')
-rw-r--r-- | count_hidden_sequences.py | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/count_hidden_sequences.py b/count_hidden_sequences.py new file mode 100644 index 0000000..c229f7a --- /dev/null +++ b/count_hidden_sequences.py @@ -0,0 +1,30 @@ +# 2145. Count the Hidden Sequences +from itertools import accumulate + +""" +you are given a 0-indexed array of 'n' integers 'differences', which +describes the differences between each pair of consecutive integers of a +hidden sequence of length '(n + 1)'. you are further given two integers +'lower' and 'upper' that describe the inclusive range of values '[lower, +upper]' that the hidden sequence can contain. return the number of possible +hidden sequences there are. if there are no possible sequences, return 0. +""" + + +class Solution(object): + def numberOfcntrrays(self, differences, lower, upper): + """ + :type differences: List[int] + :type lower: int + :type upper: int + :rtype: int + """ + cnt = list(accumulate(differences, initial=0)) + return max(0, (upper - lower) - (max(cnt) - min(cnt)) + 1) + + +if __name__ == "__main__": + obj = Solution() + print(obj.numberOfcntrrays(differences=[1, -3, 4], lower=1, upper=6)) + print(obj.numberOfcntrrays(differences=[3, -4, 5, 1, -2], lower=-4, upper=5)) + print(obj.numberOfcntrrays(differences=[4, -7, 2], lower=3, upper=6)) |