let text = readline(); const arr = ['abc',2,'def',3,'ghi',4,'jkl',5,'mno',6,'pqrs',7,'tuv',8,'wxyz',9] text = text.replace(/[(a-z)]/g,a => { for(let i=0;i<arr.length;i++){ if(typeof arr[i] == 'string' && arr[i].indexOf(a) != -1){ return arr[i+1] } } ...