Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- please code in pythonWrite a function that takes in a number and returns the sum of all primes less than or equal to that number. You'll need your answer to the previous problem to answer this.Example: sum_primes(11) == 2 + 3 + 5 + 7 + 11 == 28Bonus: Can you do this in one line with a list comprehension?arrow_forwardThe function interleave_lists in python takes two parameters, L1 and L2, both lists. Notice that the lists may have different lengths. The function accumulates a new list by appending alternating items from L1 and L2 until one list has been exhausted. The remaining items from the other list are then appended to the end of the new list, and the new list is returned. For example, if L1 = ["hop", "skip", "jump", "rest"] and L2 = ["up", "down"], then the function would return the list: ["hop", "up", "skip", "down", "jump", "rest"]. HINT: Python has a built-in function min() which is helpful here. Initialize accumulator variable newlist to be an empty list Set min_length = min(len(L1), len(L2)), the smaller of the two list lengths Use a for loop to iterate k over range(min_length) to do the first part of this function's work. On each iteration, append to newlist the item from index k in L1, and then append the item from index k in L2 (two appends on each iteration). AFTER the loop…arrow_forwardin #lang schemearrow_forward
- 1) Write a function that takes one argument, a list named sample-list. 2 ) If the length of the sample-list is > 8, then use the last element of sample-list and return it in a list. 3) If the length of sample-list is <= 8 and > 4, then return the first elements of sample-list in a list. 4) Otherwise, return the string “This is the third option.”. Please make sure to test your function!!! and explain your code shortly by adding comments to each line.arrow_forwardPython Write a function that takes as a parameter a list of strings and returns a list containing the lengths of each of the strings. That is, if the input parameter is ["apple pie", "brownies","chocolate","dulce de leche","eclairs"], your function should return [9, 8, 9, 14, 7]. The file you submit should include a main() function that demonstrates that your function works. The list that is the input argument can be a hard-coded one like the one shown above or you could ask the user to input a string and split on the appropriate delimiter, creating a list. Hint: This problem can be approached as an "accumulator", where we accumulate lists:arrow_forwardWrite a function called remove_odd that takes a list of numbers that have both even and odd numbers mixed.# Function should remove all the odd numbers and return a compact list which only contains the even numbers. Example1: Function Call:remove_odd ([21, 33, 44, 66, 11, 1, 88, 45, 10, 9])Output:[44, 66, 88, 10]arrow_forward
- message in message.2 Write a function diagoal_string that takes a list of StIaings Is tormed by combinine togetter the kith chavacter from the kth strfme in the list. as a parameter to and returns the strignes thoit In other words, if the function takes He a list with n strings १ cefum ১ new string that is formead fom the ist character from the first string, the Second character from the second string, the 3ird character fram the 3rd stning for example: getc: "family, prepave diagonal- string ([* Gan'iyour will return: " Comparrow_forwardWrite a function called find_duplicates which accepts one list as a parameter. This function needs to sort through the list passed to it and find values that are duplicated in the list. The duplicated values should be compiled into another list which the function will return. No matter how many times a word is duplicated, it should only be added once to the duplicates list. NB: Only write the function. Do not call it. For example: Test Result random_words = ("remember","snakes","nappy","rough","dusty","judicious","brainy","shop","light","straw","quickest", "adventurous","yielding","grandiose","replace","fat","wipe","happy","brainy","shop","light","straw", "quickest","adventurous","yielding","grandiose","motion","gaudy","precede","medical","park","flowers", "noiseless","blade","hanging","whistle","event","slip") print(find_duplicates(sorted(random_words))) ['adventurous', 'brainy', 'grandiose', 'light', 'quickest', 'shop', 'straw', 'yielding']…arrow_forwardPlease answer quickly In pythonarrow_forward
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