15. Element Frequency
EasyHash MapCounting
Print each distinct value with the number of times it appears, in order of first appearance.
Input format
Line 1: n Line 2: n integers
Output format
One line per distinct value: value count
Example 1
Input
7 3 1 3 2 1 3 4
Output
3 3 1 2 2 1 4 1
Example 2
Input
1 9
Output
9 1
Constraints
1 ≤ n ≤ 10⁵
Read input from standard input and print the answer to standard output. Your code is judged against 4 test cases, most of them hidden.
Loading the MyLoginn IDE…