function encryption(s: string): string {
    const cleanS = s.split("").join("")
    const srtL = Math.ceil(Math.sqrt(cleanS.length))
    
    return [...cleanS].reduce((cypfer, character, index) => {
        cypfer[index % srtL] += character
        return cypfer
    }, 
    Array(srtL).fill("")).join(" ")
}