One of the problem that is basically a subproblem for many complex problem, finding numbers smaller than certain number in list in python, is commonly encountered and this particular article discusses possible solutions to this particular problem.
Method 1 : Naive method
The most common way this problem can be solved is using loop and just counting the occurrences of elements that are smaller than the given number K.
# Python 3 code to demonstrate # Values Frequency till Maximum K# using naive method # initializing listtest_list = [1, 7, 5, 6, 3, 8] # initializing kk = 4 # printing list print ("The list : " + str(test_list)) # using naive method # to get numbers < kcount = 0for i in test_list : if i < k : count = count + 1 # printing the resultprint ("The numbers smaller than 4 : " + str(count)) |
The list : [1, 7, 5, 6, 3, 8] The numbers smaller than 4 : 2
Method 2 : Using sum()
The sum() can also help us achieving this task. We can return 1 when the number smaller than k is found and then compute the summation of is using sum().
# Python 3 code to demonstrate # Values Frequency till Maximum K# using sum() # initializing listtest_list = [1, 7, 5, 6, 3, 8] # initializing kk = 4 # printing list print ("The list : " + str(test_list)) # using sum()# to get numbers < kcount = sum(i < k for i in test_list) # printing the resultprint ("The numbers smaller than 4 : " + str(count)) |
The list : [1, 7, 5, 6, 3, 8] The numbers smaller than 4 : 2
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