Problem 1

Write a program that accepts a comma separated sequence of words as input and prints the words in a comma-separated sequence after sorting them alphabetically. Suppose the following input is supplied to the program:

Input:

without,hello,bag,world

Output should be:

bag,hello,without,world

Problem 2

A robot moves in a plane starting from the original point (0,0). The robot can move toward UP, DOWN, LEFT and RIGHT with a given steps. The trace of robot movement is shown as the following:

UP 5
DOWN 3
LEFT 3
RIGHT 2
¡­

The numbers after the direction are steps. Please write a program to compute the distance from current position after a sequence of movement and original point. If the distance is a float, then just print the nearest integer.

Example:

If the following tuples are given as input to the program:

UP 5
DOWN 3
LEFT 3
RIGHT 2
Then, the output of the program should be:
2

Problem 3

You are required to write a program to sort the (name, age, height) tuples by ascending order where name is string, age and height are numbers. The tuples are input by console. The sort criteria is:

1. Sort based on name;
2. Then sort based on age;
3. Then sort by score.

The priority is that name > age > score. If the following tuples are given as input to the program:

• Tom,19,80
• John,20,90
• Jony,17,91
• Jony,17,93
• Jason,21,85

Then, the output of the program should be:

[('John', '20', '90'), ('Jony', '17', '91'), ('Jony', '17', '93'), ('Json', '21', '85'), ('Tom', '19', '80')]