text: const createGrid = (h, w) => {
    const grid = []
    for(let i = 0; i < h; i++) {
      grid.push([])
      for(let j = 0; j < w; j++) {
        grid[i].push([])
        grid[i][j] = 0
      }
    }
    return grid
  }
  
  module.exports = {
    createGrid,
  }
  