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HackerRank is the place where we can use our learnings to solve various problems given there and make ourselves pro in coding. But in case you are in trouble solving those questions then here are the solutions.

All these solutions are compiled and successfully passed all the tests. So no worries.

Just one thing and that is before copying these codes understand the logic.

Best of luck

## Python If-Else

#!/bin/python3

import math

import os

import random

import re

import sys

if __name__ == '__main__':

n = int(input().strip())

val=n%2

if val==1:

print("Weird")

elif val==0 and n>=2 and n<=5:

print("Not Weird")

elif val==0 and n>=6 and n<=20:

print("Weird")

elif val==0 and n>20:

print("Not Weird")

## Arithmetic Operators

if __name__ == '__main__':

a = int(input())

b = int(input())

print(a+b)

print(a-b)

print(a*b)

## Python:Division

if __name__ == '__main__':

a = int(input())

b = int(input())

print(a//b)

print(a/b)

## Loops:

if __name__ == '__main__':

n = int(input())

for i in range (0,n):

print (i*i)

## Write a function:

def is_leap(year):

leap = False

# Write your logic here

if year%4==0:

leap = True

if year%400==0:

leap = True

if year%100==0 and (year %400 != 0):

leap = False

return leap

year = int(input())

print(is_leap(year))

## Print Function:

if __name__ == '__main__':

n = int(input())

for i in range (1,n+1):

print (i, end="")

## List Comprehensions:

if __name__ == '__main__':

x = int(input())

y = int(input())

z = int(input())

n = int(input())

print ([[i,j,k] for i in range(x+1) for j in range(y+1) for k in range(z+1) if i+j+k != n ])

## Lists:

if __name__ == '__main__':

N = int(input())

empty = []

new = []

for i in range(N):

x = input().split()

empty.append(x)

for i in range(len(empty)):

if empty[i][0] == 'insert':

x = int(empty[i][1])

y = int(empty[i][2])

new.insert(x,y)

elif empty[i][0] == 'print':

print(new)

elif empty[i][0] == 'remove':

new.remove(int(empty[i][1]))

elif empty[i][0] == 'append':

new.append(int(empty[i][1]))

elif empty[i][0] == 'sort':

new.sort()

elif empty[i][0] == 'pop':

new.pop()

elif empty[i][0] == 'reverse':

new.reverse()

## Swap Case:

```
# Hackerrank solution for swaping letters
def swap_case(s):
result = ''
for letter in s:
if letter.islower():
result +=letter.upper()
else:
result += letter.lower()
return result
if __name__ == '__main__':
s = input()
result = swap_case(s)
print(result)
```

## What’s Your Name ?

```
#In the main function we are taking the input from the user. Input is nothing but the first name and the last name.
Now we're coming to the print_full_name function. From the name itself it is clear that here we're trying to print whatever the question ask us to print. So simply we'll print the first_name and the last_name.
#format() is a function that is used here to replace the first_name and last_name with the {}
#So basically after taking the inputs from the user the names are called to the upper function and there we're just putting values to the required field with help of format() function.
def print_full_name(first, last):
# Write your code here
print("Hello {} {}! You just delved into python.".format(first,last))
if __name__ == '__main__':
first_name = input()
last_name = input()
print_full_name(first_name, last_name)
```

The rest of the codes will appear soon.

If you want the explanations of the answers then please let me know that in the comment section, I’ll explain the codes.