Evernote Top Four Challenge

top_four.py

"""
Evernote Top Four Challenge
Author: Riley Strong <eponymous@rileystrong.com>
Last Updated: 2013-03-07
"""


class TopValues(object):
    """
    Distills a list of numbers to the top values (largest integers).
    """
    top_values = []  # i=0 is highest value.
    length = None

    def __init__(self, length, values):
        self.length = length
        for value in values:
            self.insert_or_discard(value)

    def print_values(self):
        for value in self.top_values:
            print value

    def insert_or_discard(self, value):
        """
        Inserts the value into the top_value list if it is large enough.
        """
        insertion_point = 0
        for top_value in self.top_values:
            if value > top_value:
                break
            insertion_point = insertion_point + 1
        if insertion_point < self.length:
            self.top_values.insert(insertion_point, value)
            if len(self.top_values) > self.length:
                self.top_values.pop()


def calculate_top_four():
    # Gather input
    length = int(raw_input())
    values = []
    for i in range(length):
        values.append(int(raw_input()))
    top = TopValues(4, values)
    top.print_values()


if __name__ == "__main__":
    calculate_top_four()