from copy import copy, deepcopy

a = [[1, 2, 3], [23, 8, 7], [], [2, 1]]

#b = a
#b = copy(a)
b = deepcopy(a)

b[0] = [2, 9]
b[1][1] += 3

print(b)
print("*----------------------*")
print(a)


strlist = ["ahoj", "svete", "zkousim", "porovnani"]
listlist = [[1, 2, 3], [23, 8, 7], [2, 1]]

#tim jsme zkouseli ze sum() na seznam retezcu hodi chybu
#print(sum(strlist))
#print(sum(listlist))
print("*----------------------*")
print(min(strlist))
print(min(listlist))


def dummy(text, rubbish):
    result = ""
    for c in text:
        result += c + rubbish
    return result[:len(result)-len(rubbish)]


def reverse(text):
    result = ""
    for i in range(len(text) -1, -1, -1):
        result += text[i] + " "
    return result


def rev_simple(text):
    return text[::-1]


print(dummy('pampeliska', 'XX'))
# 'pXXaXXmXXpXXeXXlXXiXXsXXkXXa'
print(reverse('ONMEJATEJOLSEH'))
print(rev_simple('ONMEJATEJOLSEH'))
# H E S L O J E T A J E M N O


def vigenere(text, klic):
    result = ""

    i = 0
    for c in text:
        """
	# tento blok odpovida tomu dlouhemu vyrazu
        plainCharPos = ord(c) - ord('a')
        keyCharIndex = i%len(klic)
        keyCharPos = ord(klic[keyCharIndex]) - ord('a')
        posSum = plainCharPos + keyCharPos
        resultCharPos = posSum % 26
        resultCharOrd = resultCharPos + ord('a')
        result += chr(resultCharOrd)
        """
        result += chr(((ord(c) - ord('a') + ord(klic[i%len(klic)]) - ord('a')) % 26) + ord('a'))
        i += 1
    return result

print(vigenere('pampeliska', 'klic'))
# ZLUROWQUUL