using Lambda function

#example1

list1 = [2, 4, 6, 8]

def add_five(number):
   return number + 5
 
new_list = list(map(add_five, list1))
print(new_list)

#using Lambda: 

list1 = [2, 4, 6, 8]
 
new_list = list(map(lambda x: x + 5, list1))
print(new_list)



#we have a list of two weeks paycheck's amounts
#to do some process on them we can use lambda function to avoid defining a lot of functions 
#or use for loops to loop through the list
#using "lambda","map" and "filter" functions


paylist=[1000,2200,1500,1700,2100,900]

hourly=list(map(lambda x: x/80 , paylist))
monthly = list(map(lambda x: x*2 , paylist))
salary= list(map(lambda x: x*24 , paylist))
below30k=list(filter(lambda x: x<30000 , salary))
below12=list(filter(lambda x: x<12 , hourly))

print("hourly paylist is : "+str(hourly))
print("monthly paylist is : "+str(monthly))
print("yearly paylist is : "+str(salary))
print("salaries below 30k's list is : "+str(below30k))
print("hourly pay below 12$ list is : "+str(below12))



#sample activity:

Suppose we have list of student’s grades : [5.5,7,8,9.5,2.5,3,10,9,6,5]
Using Lambda,We want to calculate:
- mean(average)
-list of numbers <=4 and numbers >=8 


# extension exercises:

1-compute factorial of a number
2-create fibonacci sequence using lambda