freeCodeCamp/curriculum/challenges/english/99-dev-playground/daily-coding-challenges-python/python-challenge-14.md

id, title, challengeType, dashedName

id	title	challengeType	dashedName
6821ec98237de8297eaee79c	Python Challenge 14: Character Battle	29	python-challenge-14

--description--

Given two strings representing your army and an opposing army, each character from your army battles the character at the same position from the opposing army using the following rules:

• Characters a-z have a strength of 1-26, respectively.
• Characters A-Z have a strength of 27-52, respectively.
• Digits 0-9 have a strength of their face value.
• All other characters have a value of zero.
• Each character can only fight one battle.

For each battle, the stronger character wins. The army with more victories, wins the war. Return the following values:

• "Opponent retreated" if your army has more characters than the opposing army.
• "We retreated" if the opposing army has more characters than yours.
• "We won" if your army won more battles.
• "We lost" if the opposing army won more battles.
• "It was a tie" if both armies won the same number of battles.

--hints--

battle("Hello", "World") should return "We lost".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(battle("Hello", "World"), "We lost")`)
}})

battle("pizza", "salad") should return "We won".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(battle("pizza", "salad"), "We won")`)
}})

battle("C@T5", "D0G$") should return "We won".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(battle("C@T5", "D0G$"), "We won")`)
}})

battle("kn!ght", "orc") should return "Opponent retreated".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(battle("kn!ght", "orc"), "Opponent retreated")`)
}})

battle("PC", "Mac") should return "We retreated".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(battle("PC", "Mac"), "We retreated")`)
}})

battle("Wizards", "Dragons") should return "It was a tie".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(battle("Wizards", "Dragons"), "It was a tie")`)
}})

battle("Mr. Smith", "Dr. Jones") should return "It was a tie".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(battle("Mr. Smith", "Dr. Jones"), "It was a tie")`)
}})

--seed--

--seed-contents--

def battle(my_army, oppoising_army):

    return my_army

--solutions--

def get_strength(soldier):
    letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'

    if soldier.isdigit():
        return int(soldier)
    elif soldier in letters:
        return letters.index(soldier) + 1
    else:
        return 0

def battle(my_army, opposing_army):
    if len(my_army) > len(opposing_army):
        return 'Opponent retreated'
    if len(opposing_army) > len(my_army):
        return 'We retreated'

    my_wins = 0
    their_wins = 0

    for my_soldier, their_soldier in zip(my_army, opposing_army):
        my_strength = get_strength(my_soldier)
        their_strength = get_strength(their_soldier)

        if my_strength > their_strength:
            my_wins += 1
        elif their_strength > my_strength:
            their_wins += 1

    if my_wins > their_wins:
        return 'We won'
    elif their_wins > my_wins:
        return 'We lost'
    else:
        return 'It was a tie'