MIT - Exercise

MIT - Exercise

#### MIT SOLUTION###
#Write a program that counts up the number of vowels contained in the string s. Valid vowels are: 'a', 'e', 'i', 'o'
#'u'. For example, if s = 'azcbobobegghakl', your program should print: Number of vowels: 5
s = 'azcbobobegghakl'
count = 0
for i in range(0, len(s)):
    if s[i] == 'a'or s[i] == 'e'or s[i] == 'i'or s[i] == 'o'or s[i] == 'u':
            count += 1
print("Number of vowels: "+ str(count))

### My solution ###

s = 'hgboobbobbooboboboboboobooboobbobobobqybooboboobobob'
count = 0
for i in range(len(s)): # look into the length of the string, because i do not it in advance
    if s[i:].startswith("bob"): # look if in s the first character start with bob if not goes further
        count += 1
print ('Number of times bob occurs is:' , count)

### Other solution found online ####

numBobs = 0
for i in range(1, len(s)-1): #look at the length from the second character and the last one
    if s[i-1:i+2] == 'bob': # if at the end of the  string s or the beginning of the string +2 is equal to bob i add 1
        numBobs += 1
print ('Number of times bob occurs is:', numBobs)