How to Solve Alphabet Board Path Problem
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Alphabet Board Path
On an alphabet board, we start at position (0, 0), corresponding to character board[0][0]. Here, board = ["abcde", "fghij", "klmno", "pqrst", "uvwxy", "z"], as shown in the diagram below. We may make the following moves: (Here, the only positions that exist on the board are positions with letters on them.) Return a sequence of moves that makes our answer equal to target in the minimum number of moves. You may return any path that does so.
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Understanding the Alphabet Board Path Problem
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Problem Statement
On an alphabet board, we start at position (0, 0), corresponding to character board[0][0]. Here, board = ["abcde", "fghij", "klmno", "pqrst", "uvwxy", "z"], as shown in the diagram below. We may make the following moves: (Here, the only positions that exist on the board are positions with letters on them.) Return a sequence of moves that makes our answer equal to target in the minimum number of moves. You may return any path that does so.
Alphabet Board Path
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Examples
# Example 1
target = "leet"
"DDR!UURRR!!DDD!"
# Example 2
target = "code"
"RR!DDRR!UUL!R!"
Constraints
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Solve Alphabet Board Path — On an alphabet board, we start at position (0, 0), corresponding to character bo...
Here's the optimal approach using Hash Table:
Time: O(n) | Space: O(n)
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