Write a program to count repetation of name's of students in a classroom

Question

There are n no. Of students in a classroom and all are said to stand in a straight line and they randomly arrange themselves in a straight line. You are allowed to ask their name in a sequence from student 1 to n and multiple students have the same name. Write an algorithm to print the name in the same order which they occur as u ask them. Also provide the complexity of your algorithm in Big o notation.
Sample Input
N=9
Alok, amit, suresh, amit, vidhya, sindhu, vidhya, vidhya, alok
Output
Alok-2
Amit-2
Suresh-1
Vidhya-3
Sindhu-1

Answer 1

Ok first show us your attempt
if you get any errors then we can help

Answer 2

Hint: use a dictionary with names as keys

Answer 3

Can any one please help me with the complexity in this

https://code.sololearn.com/cG7V2YegxsVR/?ref=app