ecursive functionsdefine a recursive function to generate all possiblesubsequences of a given stringTest Case 1:Enter a string: abccbbcaacababcTest Case 2:Enter a string: abbaabSample Test CasesTest Case 1:Expected Output:Enter·a·string:·abccbbcaacababcTest Case 2:Expected Output:Enter·a·string:·abbaab
Question
ecursive functionsdefine a recursive function to generate all possiblesubsequences of a given stringTest Case 1:Enter a string: abccbbcaacababcTest Case 2:Enter a string: abbaabSample Test CasesTest Case 1:Expected Output:Enter·a·string:·abccbbcaacababcTest Case 2:Expected Output:Enter·a·string:·abbaab
Solution
It seems like you want to generate all possible subsequences of a given string using a recursive function. Here is a Python function that does that:
def subsequences(s):
if s == "":
return [s] # base case: empty string
else:
rest = subsequences(s[1:]) # recursive case: get subsequences of rest of string
return rest + [s[0] + ss for ss in rest] # prepend first character to each subsequence of rest of string
# Test Case 1
print(subsequences("abccbbcaacababc"))
# Test Case 2
print(subsequences("abbaab"))
This function works by first checking if the string is empty. If it is, it returns a list containing the empty string. Otherwise, it recursively gets all subsequences of the rest of the string (i.e., the string without the first character), and then prepends the first character to each of these subsequences. The result is a list of all possible subsequences of the original string.
Please note that the output will be a list of all possible subsequences, not a string. If you want the output to be a string, you can modify the function accordingly.
Similar Questions
anagram functionProblem:define a recursive function to generate all Anagrams of a given stringTest Case 1:Enter a word: abcabcacbbacbcacabcbaTest Case 2:Enter a word: ababbaSample Test CasesTest Case 1:Expected Output:Enter·a·word:·abcabcacbbacbcacabcbaTest Case 2:Expected Output:Enter·a·word:·ababba
Given a string s of length n, find all the possible subsequences of the string s in lexicographically-sorted order.
Given two strings text1 and text2, return the length of their longest common subsequence. If there is no common subsequence, return 0.A subsequence of a string is a new string generated from the original string with some characters (can be none) deleted without changing the relative order of the remaining characters.For example, "ace" is a subsequence of "abcde".A common subsequence of two strings is a subsequence that is common to both strings. Example 1:Input: text1 = "abcde", text2 = "ace" Output: 3 Explanation: The longest common subsequence is "ace" and its length is 3.
Write a program to generate all possible strings with balanced parentheses having N pairs of curly braces.Input FormatThe first line of input contains T - the number of test cases. It's followed by T lines, each containing a single integer N.Output FormatFor each test case, print each combinational pair of balanced parenthesis of length N in a lexicographical order along with the test case number, separated by a new line.Constraints1 <= T <= 121 <= N <= 12ExampleInput232OutputTest Case #1:{{{}}}{{}{}}{{}}{}{}{{}}{}{}{}Test Case #2:{{}}{}{}
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