Google Coding Interview Question | Leetcode 249 | Group Shifted Strings

[@ggjj3719]

Thanks for explaining the question. It would be perfect if your voice sound can be higher. It's hard for me to hear even I turned my volume to the highest of my computer. I like the style your analyze the problem. NJ!

[@edwardteach2]

Thanks! My python implementation:
class Solution(object):
def groupStrings(self, strings):
"""
:type strings: List[str]
:rtype: List[List[str]]
"""
mapp = collections.defaultdict(list)
for s in strings:
arr = [0] * 26
for i in range(len(s) - 1):
a = ord(s[i])
b = ord(s[i+1])
diff = b - a
arr[diff] += 1
mapp[tuple(arr)].append(s)
return mapp.values()

[@algerienizer]

great videos, the audio is very low though