my_str = 'peter piper picked a peck of pickled peppers.'

word= ' '
out = ''

for i in range(len(my_str)):
    if my_str[i] ==' ':
    out = out   word.title()
    word =' '
else:
    word = word   my_str[I]
out = out   word.title()
print(out)

I am getting results using methods inside the loop... How can I get the same result using loops but not methods?

CodePudding user response：

Here is a very naive method without any string method. In summary keep a flag True on spaces. If the flag is set and you have a lowercase letter, make it uppercase. Then set the flag False.

my_str = 'peter piper picked a peck of pickled peppers.'

out = ''
up = True

low, high = ord('a'), ord('z')
shift = ord('A') - low
for char in my_str:
    o = ord(char)
    if up:
        if low <= o <= high:
            char = chr(o shift)
        up = False
    if char == ' ':
        up = True
    out  = char

out

Output: 'Peter Piper Picked A Peck Of Pickled Peppers.'

NB. This is less efficient than using string methods, in particular due to the repeated string concatenation. Also this only works on ASCII letters.

CodePudding user response：

You could get the capital of a character without using a built-in method by using this function. It loops through ascii_lowercase and once the element of it is equal to the character you passed, it returns the element in the corresponding index from ascii_lowercase.

from string import ascii_lowercase, ascii_uppercase    

def get_title(letter):
    for index in range(len(ascii_lowercase)):
        if ascii_lowercase[index] == letter:
            return ascii_uppercase[index]

So essentially, if you want to get the capital of each first letter, you could try this.

my_str = 'peter piper picked a peck of pickled peppers.'
my_str  = " "

word = ""
sentence = ""
for char in my_str:
    if char == " ":
        sentence  = get_title(word[0])   word[1:len(word)]   " "
        word = ""
    else:
        word  = char

print(sentence)

Here, each word is stored when there is a space which is why a space is added to the end of my_str initially. After getting the word, the first element of word (capitalized with get_title) and the rest is added to sentence.

CodePudding user response：

ord is used to convert it to unicode and then minus that value with 32 to make it capitalize and in final step chr it convert back to character

a = 'this is awesome'
b = ''
for each in range(0,len(a)):
    if each == 0 or a[each-1] == ' ':
        x = ord(a[each])
        y = x - 32
        z = chr(y)
    else:
        z = a[each]
    b  = z

Output

print(b)
This Is Awesome