Javascript

function gridChallenge(grid: string[]): string { // Write your code here const sorted_grid = grid.map(row => Array.from(row).sort())

for(let j=0; j<sorted_grid.length; j++){
    for(let i=0; i <sorted_grid.length-1; i++){
      if (sorted_grid[i+1][j] < sorted_grid[i][j]){
          return 'NO'
      }   
    }
}

return 'YES'

}