Agami Technologies Full Stack Java Developer interview questions

They asked me 2 question on first round 1st is find the largest number of any array using recursion , and 2nd is count the vowels and consonants in any string using recursion. and second round question is food delivery system using fronted , backend both , that's is much more difficult.

Find the LCM of array elements and take input from user? Write a function to compute the count of vowels and consonants in a string ?