Strings
sWAP cASE
Using swapcase()
def swap_case(s):
return s.swapcase()
if __name__ == '__main__':
s = 'HackerRank.com presents "Pythonist 2".'
print(swap_case(s))Using List Comprehension
def swap_case(s):
return ''.join(each.upper() if each.islower() else each.lower() for each in s)
if __name__ == '__main__':
s = 'HackerRank.com presents "Pythonist 2".'
print(swap_case(s))String Split and Join
def split_and_join(line):
return "-".join(line.split())
if __name__ == '__main__':
line = input()
result = split_and_join(line)
print(result)What is Your Name?
def print_full_name(first, last):
print(f'Hello {first} {last}! You just delved into python.')
if __name__ == '__main__':
first_name = input()
last_name = input()
print_full_name(first_name, last_name)Mutations
Using List
def mutate_string(string, position, character):
ls = list(string)
ls[position] = character
return ''.join(ls)
if __name__ == '__main__':
s = input()
i, c = input().split()
s_new = mutate_string(s, int(i), c)
print(s_new)Using Slice
def mutate_string(string, position, character):
return s[:position] + character + s[position + 1:]
if __name__ == '__main__':
s = input()
i, c = input().split()
s_new = mutate_string(s, int(i), c)
print(s_new)Find a String
def count_substring(string, sub_string):
count = 0
for i in range(len(string)):
if string[i:i + len(sub_string)] == sub_string:
count += 1
return count
if __name__ == '__main__':
string = input().strip()
sub_string = input().strip()
count = count_substring(string, sub_string)
print(count)String Validators
def isAlphaNumeric(s):
for i in s:
if i.isalnum():
return True
return False
def isAlphabetic(s):
for i in s:
if i.isalpha():
return True
return False
def isDigit(s):
for i in s:
if i.isdigit():
return True
return False
def isLower(s):
for i in s:
if i.islower():
return True
return False
def isUpper(s):
for i in s:
if i.isupper():
return True
return False
if __name__ == '__main__':
s = input()
print(isAlphaNumeric(s))
print(isAlphabetic(s))
print(isDigit(s))
print(isLower(s))
print(isUpper(s))Text Alignment
def main():
thickness = int(input())
c = 'H'
# Top Cone
for i in range(thickness):
print((c * i).rjust(thickness - 1) + c + (c * i).ljust(thickness - 1))
# Top Pillars
for i in range(thickness + 1):
print((c * thickness).center(thickness * 2) + (c * thickness).center(thickness * 6))
# Middle Belt
for i in range((thickness + 1) // 2):
print((c * thickness * 5).center(thickness * 6))
# Bottom Pillars
for i in range(thickness + 1):
print((c * thickness).center(thickness * 2) + (c * thickness).center(thickness * 6))
# Bottom Cone
for i in range(thickness):
print(((c * (thickness - i - 1)).rjust(thickness) + c + (c * (thickness - i - 1)).ljust(thickness)).rjust(
thickness * 6))
if __name__ == "__main__":
main()Text Wrap
import textwrap
def wrap(string, max_width):
return '\n'.join(textwrap.wrap(string, max_width))
if __name__ == '__main__':
string, max_width = input(), int(input())
result = wrap(string, max_width)
print(result)Designer Door Mat
def main():
n, m = map(int, input().split(' '))
pattern = '.|.'
middle_point = ((n - 1) / 2) + 1
for i in range(n):
if i + 1 < middle_point:
print(f'{f"{pattern * i}" + pattern + f"{pattern * i}"}'.center(m, '-'))
elif i + 1 == middle_point:
print('WELCOME'.center(m, '-'))
else:
print(f'{f"{pattern * (n - (i + 1))}" + pattern + f"{pattern * (n - (i + 1))}"}'.center(m, '-'))
if __name__ == "__main__":
main()String Formatting
def print_formatted(number):
l = len(bin(number)[2:])
for i in range(1, number + 1):
print(f"{f'{i}'.rjust(l)} {f'{oct(i)}'[2:].rjust(l)} {f'{hex(i)}'[2:].upper().rjust(l)} {f'{bin(i)}'[2:].rjust(l)}" )
if __name__ == '__main__':
n = int(input())
print_formatted(n)Alphabet Rangoli
import string
def print_rangoli(n):
alphabets = string.ascii_lowercase
for i in range(n-1):
print("-".join(list(alphabets[n - i:n][::-1] + alphabets[n - (i + 1):n])).center(((n - 1) * 4) + 1, "-"))
for i in range(n):
print("-".join(list(alphabets[i:n][::-1] + alphabets[i + 1:n])).center(((n - 1) * 4) + 1, "-"))
if __name__ == '__main__':
n = int(input())
print_rangoli(n)Capitalize!
def solve(s):
return ' '.join(each.capitalize() for each in s.strip().split(' ')) # Solution
if __name__ == '__main__':
fptr = open(os.environ['OUTPUT_PATH'], 'w')
s = input()
result = solve(s)
fptr.write(result + '\n')
fptr.close()The Minion Game
def minion_game(string):
length_of_string = len(string)
kev = sum(length_of_string - i for i in range(length_of_string) if string[i] in "AEIOU")
stu = length_of_string * (length_of_string + 1) / 2 - kev
if stu > kev:
print(f"Stuart {int(stu)}")
elif stu == kev:
print("Draw")
else:
print(f"Kevin {int(kev)}")
if __name__ == '__main__':
s = input()
minion_game(s)Merge The Tools!
from collections import OrderedDict
def merge_the_tools(string, k):
for i in range(0, len(string.strip()), k):
print(''.join(list(OrderedDict.fromkeys(string[i: i + k]).keys())))
if __name__ == '__main__':
string, k = input(), int(input())
merge_the_tools(string, k)Last updated
