| 8 | 8 | * @returns {string[]} |
| 9 | 9 | */ |
| 10 | 10 | export const annotate = (input) => { |
| 11 | | throw new Error('Remove this statement and implement this function'); |
| 11 | // Edge Case: Handle empty input |
| 12 | if (!input || input.length === 0) { |
| 13 | return []; |
| 14 | } |
| 15 | |
| 16 | // Edge Case: Handle input with empty strings |
| 17 | const rows = input.length; |
| 18 | const cols = input[0] ? input[0].length : 0; |
| 19 | |
| 20 | // Edge Case: Handle rows with inconsistent lengths |
| 21 | for (let i = 0; i < rows; i++) { |
| 22 | if (input[i].length !== cols) { |
| 23 | // Pad shorter rows with spaces |
| 24 | input[i] = input[i].padEnd(cols, ' '); |
| 25 | } |
| 26 | } |
| 27 | |
| 28 | // Edge Case: Handle single cell board |
| 29 | if (rows === 1 && cols === 1) { |
| 30 | return input[0] === '*' ? ['*'] : [' ']; |
| 31 | } |
| 32 | |
| 33 | const result = []; |
| 34 | |
| 35 | // Process each cell |
| 36 | for (let i = 0; i < rows; i++) { |
| 37 | let newRow = ''; |
| 38 | for (let j = 0; j < cols; j++) { |
| 39 | if (input[i][j] === '*') { |
| 40 | newRow += '*'; |
| 41 | } else { |
| 42 | // Count adjacent flowers |
| 43 | let count = 0; |
| 44 | |
| 45 | // Check all 8 adjacent positions |
| 46 | for (let di = -1; di <= 1; di++) { |
| 47 | for (let dj = -1; dj <= 1; dj++) { |
| 48 | // Skip the cell itself |
| 49 | if (di === 0 && dj === 0) continue; |
| 50 | |
| 51 | const ni = i + di; |
| 52 | const nj = j + dj; |
| 53 | |
| 54 | // Edge Case: Check bounds |
| 55 | if (ni >= 0 && ni < rows && nj >= 0 && nj < cols) { |
| 56 | if (input[ni][nj] === '*') { |
| 57 | count++; |
| 58 | } |
| 59 | } |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | // Edge Case: No adjacent flowers |
| 64 | if (count === 0) { |
| 65 | newRow += ' '; |
| 66 | } else { |
| 67 | newRow += count.toString(); |
| 68 | } |
| 69 | } |
| 70 | } |
| 71 | result.push(newRow); |
| 72 | } |
| 73 | |
| 74 | return result; |
| 12 | 75 | }; |
| 76 | |
| 77 | // Handled Edge Cases: empty input, input with empty strings, rows with inconsistent lengths, single cell board, out of bounds access, no adjacent flowers |