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Help coding simple python function?
I'm supposed to write a recursive function called count_xx(str) that counts the number of times "xx" appears in the input string. The "xx" substrings must not overlap.
1 Answer
- brilliant_movesLv 75 years ago
Hi Audrey. This is one solution:
def count_xx(str):
... count = 0
... found_x = False
... for ch in str:
... ... if ch=='x':
... ... ... if found_x:
... ... ... ... count += 1
... ... ... ... found_x = False
... ... ... else:
... ... ... ... found_x = True
... ... else:
... ... ... found_x = False
... return count
def main():
... print (count_xx ("axbxxcxxxx"))
main()
#Note: I've used "... " to show indentation. Replace dots with tabs/spaces.
