CODEWITHSUNDEEP
pythonlist
SanBan
SanBan

Reputation: 655

Reversing a list of list with string characters

I have a problem where I am given a list of lists having strings. I have to reverse not only the strings but also output a list of lists in reverse way

Example : 

input_list = [["CAT", "BAT", "SAT"], ["MAN","CHAN", "LAN"], ["CAL", "NJ","NYC"]]

EXPECTED OUTPUT :

[["CYN", "JN", "LAC"], ["NAL", "NAHC", "NAM"], ["TAS", "TAB", "TAC"]]

Code I am trying :

doc_file = [["CAT", "BAT", "SAT"],
            ["MAN","CHAN", "LAN"],
            ["CAL", "NJ","NYC"]]
temp_list = []
temp_list2 = []
#print("reversing First Line:")
rev_main_list = list(reversed(doc_file))
#print(rev_main_list)
for i in range(len(rev_main_list)):
     for j in range(len(rev_main_list[i])):
        # print("value of i:", i)
        # print("value of j:", j)
        temp_list.append((rev_main_list[i][j][::-1]))
    #print("outer loop i:", i)
    temp_list2.append(temp_list[i])
    rev_main_list =temp_list2
    print(rev_main_list)

Your help is much appreciated

Upvotes: 1

Views: 34

Answers (2)

kirkpatt
kirkpatt

Reputation: 623

for small_list in big_list:
    for x in small_list:
        x = x[::-1]
    small_list.reverse()
big_list.reverse()

Bit of a clunky fix, but it should work for you.

Upvotes: 0

Joran Beasley
Joran Beasley

Reputation: 113950

def reverse_it(a):
    if isinstance(a,(list,tuple)):
       return [reverse_it(x) for x in a[::-1]]
    return a[::-1]

Upvotes: 1

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