const arr = Array.from(Array(rows),()=>[])
const RealArr = Array.from(Array(rows),() => {
return Array(columns).fill(null)
})
RealArr.map((arr,i)=>arr.map((x,j)=>{
RealArr[i][j]=count++;
}))
let countVal = 1;
const RealArr = Array.from(Array(rows),() =>Array(columns).fill(0).map(()=>countVal++))