[HAI] isValidSudoku WIP

lib/isValidSudoku/isValidSudoku.test.ts

@@ -4,7 +4,7 @@ import { isValidSudoku } from "./isValidSudoku.ts";
 describe("isValidSudoku", () => {
 
   it("true case", () => {
-    const board =
+    let board =
       [["5", "3", ".", ".", "7", ".", ".", ".", "."]
         , ["6", ".", ".", "1", "9", "5", ".", ".", "."]
         , [".", "9", "8", ".", ".", ".", ".", "6", "."]
@@ -19,7 +19,7 @@ describe("isValidSudoku", () => {
   });
 
   it("false case", () => {
-    const board =
+    let board =
       [["8", "3", ".", ".", "7", ".", ".", ".", "."]
         , ["6", ".", ".", "1", "9", "5", ".", ".", "."]
         , [".", "9", "8", ".", ".", ".", ".", "6", "."]

lib/isValidSudoku/isValidSudoku.ts

@@ -3,63 +3,15 @@ export function isValidSudoku(board: string[][]): boolean {
   const colTable: Record<string, string[]> = {}
   const cellTable: Record<string, string[]> = {}
 
-  let cellNum = 0;
-
   for (let i = 0; i < board.length; i++) {
-    if (i + 1 % 3 === 0) cellNum = i;
-
-    for (let j = 0; j < board[i].length; j++) {
-      // check repeat in rows 
-      const rowValue = board[i][j];
-      const rowKey = i + "_" + cellNum;
-      if (rowValue === ".") continue;
-
-      if (
-        !rowTable[rowKey]
-      ) {
-        rowTable[rowKey] = [rowValue];
-      } else {
-        if (rowTable[rowKey].includes(rowValue)) return false;
-        rowTable[i + "_" + cellNum].push(rowValue);
-      }
-    }
-
-    // check repeat in collumns
-    const collValue = board[i][i];
-    const collKey = i + "_" + cellNum;
-
-    if (collValue === ".") continue;
-
-    if (!colTable[collKey]) {
-      colTable[collKey] = [collValue];
-    } else {
-      if (colTable[collKey] && colTable[collKey].includes(collValue)) return false;
-      colTable[collKey].push(collValue)
-    }
+    rowTable[i] = board[i].filter(item => item !== ".");
+    if (new Set(rowTable[i]).size !== rowTable[i].length) return false;
+    colTable[i] = board.map(item => item[i]).filter(item => item !== ".");
+    if (new Set(colTable[i]).size !== rowTable[i].length) return false;
   }
 
-  // create cellTable
-  for (let cellKey = 0; cellKey < board.length; cellKey++) {
-    if (cellKey + 1 % 3 === 0) cellNum = (cellKey + 1) / 3;
-    let rowKey = cellKey + "_" + cellNum;
-    let rowValues = rowTable[rowKey];
-
-    if (!cellTable[cellKey]) {
-      cellTable[cellKey] = rowValues;
-    } else {
-      rowValues.forEach(value => {
-        if (
-          cellTable[cellKey].includes(value)
-        ) {
-          return false
-        }
-      })
-      cellTable[cellKey].concat(rowValues);
-    }
-  }
 
   console.log({ cellTable, rowTable, colTable })
 
-
   return true
 };