8000 Update 36. Valid Sudoku.js by Tahirc1 · Pull Request #14 · Tahirc1/LeetcodeJs · GitHub
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Update 36. Valid Sudoku.js #14

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Merged
merged 1 commit into from
Oct 28, 2024
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Update 36. Valid Sudoku.js #14

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10 changes: 8 additions & 2 deletions 31-40/36. Valid Sudoku.js
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Original file line number Diff line number Diff line change
@@ -1,23 +1,29 @@
var isValidSudoku = function(board) {
// create variable to store row , col and box values
let row = []
let col = []
let box = []
// loop i over 0-8
for (let i = 0; i <= 8; i++){
// loop j over 0-8
for (let j = 0; j <= 8; j++){
// this will help us get position of each cell from board
let IndI = 3*Math.floor(i/3) + Math.floor(j/3)
let IndJ = 3*(i % 3) + (j % 3)
// check if value is already in row , col or box and return false
if (row.indexOf(board[i][j]) != -1 ){return false}
if (col.indexOf(board[j][i]) != -1 ){return false}
if (box.indexOf(board[IndI][IndJ]) != -1){return false}

// if not then add value to row , col and box
if(board[i][j] != '.'){row.push(board[i][j])}
if(board[j][i] != '.'){col.push(board[j][i])}
if(board[IndI][IndJ] != '.'){box.push(board[IndI][IndJ])}
}
// reset row , col and box array
row = []
col = []
box = []
}

return true
}
}
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