ByteDance / TikTokCoding·60 minMembers
Word Search II with Trie
Members only
Find words from a dictionary inside a 2D character board. The expected solution builds a trie over the word list, then runs backtracking DFS from each board cell with in-place visited marking.
SWE
trie
grid
dfs
backtracking
hard
Frequency
Single report
Last asked
2026-05-20
Stage
onsite-coding
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