Deloitte Software Developer interview questions

What is $?

var a 10?

input 1 2 3 3 5 output 1 2 3 4 5 Use any data structure to get the output. WTF that mean, is it replacing second 3 by 4, or replacing index 3 by 4? No clear instructions. If asked he started writing a loop to iterate. and the expected answer was, cuncurrentModificationExcetion. I think he has to learn with far loop there is no such exception happens and if we do it using iterator the exception occurs.

3 2 1 3 2 Get the second min using SQL?

How to declare a class as Spring Controller using XML?

Difference between null & undefined in JS?

How to get int from "123" in JS?

Difference between preparedStatement and callableStatement?

var r = 1+"1"; and var r = "1"+1; write output.