From b73ad5335c03e5906dcc3936dd057f2c12403936 Mon Sep 17 00:00:00 2001 From: Anthony Sim Date: Sun, 3 Apr 2022 13:59:29 -0700 Subject: [PATCH] added JS 79-Word-Search --- javascript/79-Word-Search.js | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 javascript/79-Word-Search.js diff --git a/javascript/79-Word-Search.js b/javascript/79-Word-Search.js new file mode 100644 index 000000000..437bd351f --- /dev/null +++ b/javascript/79-Word-Search.js @@ -0,0 +1,29 @@ +function dfs(board, i, j, remain) { + if (remain === "") return true; + if (i < 0 || i >= board.length || j < 0 || j >= board[0].length) return false; + if (board[i][j] !== remain[0]) return false; + + let temp = board[i][j]; + board[i][j] = "-"; + + let result = ( + dfs(board, i - 1, j, remain.slice(1)) + || dfs(board, i + 1, j, remain.slice(1)) + || dfs(board, i, j - 1, remain.slice(1)) + || dfs(board, i, j + 1, remain.slice(1)) + ) + + board[i][j] = temp; + return result; +} + +var exist = function (board, word) { + for (let i = 0; i < board.length; i++) { + for (let j = 0; j < board[0].length; j++) { + if (dfs(board, i, j, word)) { + return true; + } + } + } + return false; +}; \ No newline at end of file