Word Search - Leetcode 79 - Recursive Backtracking (Python)
The Python code for this problem can be found at my GitHub repo here: github.com/gahogg/Leetcode-So...
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Пікірлер: 5
Hey greg ... Can you make a video or make a pdf of something that consists all strings based ir other all category algorithms ... I want particularly for string like kmp ..m can you put all the algos at one place from easy to hard
@GregHogg
Ай бұрын
This question is part of a playlist that has all the leetcode questions I've done on there so far. I also have them in mini playlists organized by category. I hope this helps!!
Any reason to use pos in backtrack() instead of i, j? You change it back to i, j in the first time anyways. The efficiency goes up quite a bit when changing pos to i, j
Doesnt that mean your solution doesnt work whenever the word is taking up the whole grid? Like in the example for 1x1 there is nowhere to go to and it would return false, right?
@GregHogg
Ай бұрын
Actually, no, this is not the case. It's particularly when there's exactly one spot. From the position on the last character, the board would just need literally any valid space to go to. Even if that space was marked as a hashtag or a character or whatever, it just needs an actual valid (i,j) position to move to