# 2.6.4 – 2.6.6

def in_list(l, u):
	for e in l:
		if e == u:
			return True # on peut s'arrêter dès qu'on a trouvé
	return False # si on sort de la boucle, c'est que u n'est pas dans la liste

def index(l, u):
	for i in range(len(l)):
		if l[i] == u:
			return i
	return -1 # consigne de l'énoncé

def count(l, u):
	c = 0
	for e in l:
		if e == u:
			c += 1
	return c

"""
l = [4, 7, 2, 7]
print(in_list(l, 3), index(l, 3), count(l, 3))
print(in_list(l, 7), index(l, 7), count(l, 7))
"""


# 2.6.7 – 2.6.8

def minimum(l):
	m = float("inf") # minimum du début de la liste
	for e in l:
		if e < m:
			m = e
	return m

def maximum(l):
	m = float("-inf")
	i_m = None
	for i in range(len(l)):
		e = l[i]
		if e > m:
			m = e
			i_m = i
	return i_m

def somme(l):
	s = 0
	for e in l:
		s += e
	return s

def moyenne(l):
	s = somme(l)
	return s/len(l)

"""
l = [56, 3, 8, 4]
print("minimum :", minimum(l))
print("indice du maximum (valeur) :", maximum(l), l[maximum(l)])
print("somme :", somme(l))
print("moyenne :", moyenne(l))
"""


# 2.6.14 p.84

def compte_carac(l, c):
	n = 0
	for e in l:
		if e == c:
			n += 1
	return n

def compte_alphab(l):
	counts = []
	for o in range(ord('a'), ord('z')+1):
		c = chr(o)
		counts.append(compte_carac(l, c))
	return counts

def compte_alphab2(l):
	counts = []
	for o in range(ord('a'), ord('z')+1):
		counts.append(0)
	for c in l:
		i = ord(c) - ord('a')
		counts[i] += 1
	return counts
	
t = "coucou"
print(t, "contient", compte_carac(t, 'u'), "u")
print(compte_alphab2(t))


# 2.6.15 voir correction TP6 3.6.3