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Plotting Fibonacci

0 likes • Nov 19, 2022
Python
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Palindrome checker

CodeCatch
0 likes • Nov 19, 2022
Python
# function which return reverse of a string
def isPalindrome(s):
return s == s[::-1]
# Driver code
s = "malayalam"
ans = isPalindrome(s)
if ans:
print("Yes")
else:
print("No")

primes numbers finder

mo_ak
0 likes • Mar 12, 2021
Python
prime_lists=[] # a list to store the prime numbers
def prime(n): # define prime numbers
if n <= 1:
return False
# divide n by 2... up to n-1
for i in range(2, n):
if n % i == 0: # the remainder should'nt be a 0
return False
else:
prime_lists.append(n)
return True
for n in range(30,1000): # calling function and passing starting point =30 coz we need primes >30
prime(n)
check=0 # a var to limit the output to 10 only
for n in prime_lists:
for x in prime_lists:
val= n *x
if (val > 1000 ):
check=check +1
if (check <10) :
print("the num is:", val , "=",n , "* ", x )
break
class Rectangle:
pass
class Square(Rectangle):
pass
rectangle = Rectangle()
square = Square()
print(isinstance(rectangle, Rectangle)) # True
print(isinstance(square, Rectangle)) # True
print(isinstance(square, Square)) # True
print(isinstance(rectangle, Square)) # False

Append to a file

CodeCatch
0 likes • Jun 1, 2023
Python
filename = "data.txt"
data = "Hello, World!"
with open(filename, "a") as file:
file.write(data)

Print pyramid pattern

CodeCatch
0 likes • Nov 19, 2022
Python
def print_pyramid_pattern(n):
# outer loop to handle number of rows
# n in this case
for i in range(0, n):
# inner loop to handle number of columns
# values changing acc. to outer loop
for j in range(0, i+1):
# printing stars
print("* ",end="")
# ending line after each row
print("\r")
print_pyramid_pattern(10)

Return Letter Combinations

AustinLeath
0 likes • Nov 18, 2022
Python
# @return a list of strings, [s1, s2]
def letterCombinations(self, digits):
if '' == digits: return []
kvmaps = {
'2': 'abc',
'3': 'def',
'4': 'ghi',
'5': 'jkl',
'6': 'mno',
'7': 'pqrs',
'8': 'tuv',
'9': 'wxyz'
}
return reduce(lambda acc, digit: [x + y for x in acc for y in kvmaps[digit]], digits, [''])