The functions in this exercise are designed to be solvable in a number of ways. Just getting them working shouldn't be much of a challenge, but exploring di erent ways of solving the same problem will be fun. Try to solve each function using loops and then again using slicing (you can submit whichever version you wish). As always, all of your functions should be in appropriately named les (ex4.py and ex4.test), and you should not use print, input or import.
insert
Write a function called insert that takes 3 parameters, listA, listB1 and an index, then returns a copy of listA with the elements of listB inserted at the index. Your code should work with either strings or lists e.g.,
insert([1, 2, 3], [ a , b , c ], 2) [1, 2, a , b , c , 3]
insert("123","abc",2)
12abc3
up to rst
Write a function called up to first that takes two parameters, a list (or string) and an object, and returns a copy of the list up to (but not including) the rst occurrence of that object, or all of the elements if that object is not in the list. e.g.,
up_to_first([1, 2, 3, 4], 3) [1, 2]
up_to_first([1, 2, 3, 4], 9) [1, 2, 3, 4]
up_to_first( abcdef , d ) abc
cut list
Write a function called cut list that \cuts" a list. That is, given a list and an index, returns a copy of the list, but with the items before and after the index swapped. As always, your code should also work with strings. e.g.,
cut_list([0,1,2,3,4,5,6,7,8,9], 3) [4, 5, 6, 7, 8, 9, 3, 0, 1, 2]
cut_list("ABCDEFGX1234",7)
1234XABCDEFG
You should probably come up with better names than these
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