Class Statistics#3043
The new principal of Woop Woop Public School is planning to meet with the teaching staff to discuss the performance of classes and teachers. Being an avid supporter of statistics, he wants to arm himself with statistical information for these meetings.
Your task is to write a program that reads student grades from each class and generates performance reports for the principal ahead of the meetings.
The input begins with an integer (1 \le K \le 100), representing the number of classes. Each of the following lines contains data for one class, beginning with an integer (2 \le N \le 50) — the number of students in that class. Then follow integers — the grades of the students, ranging from zero to one hundred, separated by spaces.
The report for each class should consist of two lines.
The first line: "Class ", where is the class number, starting from one.
The second line should report the maximum grade in the class, the minimum grade in the class, and the largest difference between adjacent grades in the class (if they are sorted in non-increasing order), in the format shown in the sample.
Example 1