const ranks = ["s1", "s2", "s3", "s4", "s5", "s6", "g1", "g2", "g3", "g4",
"mg1","mg2","mge","dmg","le","lem","sup","global elite",];
function showRank(rank) {
const random = Math.trunc(Math.random() * rank.length);
console.log(rank[random]);
}

showRank(ranks);