buoi 2 - bai 6
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#bai 6 -copy code from internet =))
s = "this is a string, let's find out the most common and least common charater"
max_letter = s[0]
min_letter = s[0]
max = s.count(s[0])
min = s.count(s[0])
for c in s:
if c is not " ":
if s.count(c) > max:
max_letter = c
max = s.count(c)
if s.count(c) < min:
min_letter = c
min = s.count(c)
print ("chu cai xuat hien nhieu nhat la %s , voi %s lan" %(max_letter, max))
print ("chu cai xuat hien it nhat la %s , voi %s lan" %(min_letter, min))
Python
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