Given three strings str, A and B. The task is to check whether str = A + B or str = B + A where + denotes concatenation.
Input: str = “GeeksforGeeks”, A = “Geeksfo”, B = “rGeeks”
str = A + B = “Geeksfo” + “rGeeks” = “GeeksforGeeks”
Input: str = “Delhicapitals”, B = “Delmi”, C = “capitals”
- If len(str) != len(A) + len(B) then it is not possible to generate str by concatenating a + b or b + a.
- Else check whether str starts with a and ends with b or it starts with b and ends with a. Print Yes if any of these is true else print No
Below is the implementation of the above approach:
Time Complexity: O(N)
- Pairs of strings which on concatenating contains each character of "string"
- Check whether a binary string can be formed by concatenating given N numbers sequentially
- Meta Strings (Check if two strings can become same after a swap in one string)
- Check if given string can be split into four distinct strings
- Given two strings check which string makes a palindrome first
- Check if given string can be formed by two other strings or their permutations
- Check if a string contains two non overlapping sub-strings "geek" and "keeg"
- Lexicographically smallest string obtained after concatenating array
- N-th character in the string made by concatenating natural numbers
- Find the starting indices of the substrings in string (S) which is made by concatenating all words from a list(L)
- Given a string and an integer k, find the kth sub-string when all the sub-strings are sorted according to the given condition
- Number of sub-strings which are anagram of any sub-string of another string
- Sub-strings of a string that are prefix of the same string
- Check if two strings are permutation of each other
- Check whether two strings are anagram of each other
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