Check whether given string can be generated after concatenating given strings in Python

Suppose we have two strings s and t and r, we have to check whether r = s | t or r = t + s where | denotes concatenation.

So, if the input is like s = "world" t = "hello" r = "helloworld", then the output will be True as "helloworld" (r) = "hello" (t) | "world" (s).

To solve this, we will follow these steps −

• if size of r is not same as the sum of the lengths of s and t, then
  • return False
• if r starts with s, then
  • if r ends with t, then
    • return True
• if r starts with t, then
  • if r ends with s, then
    • return True
• return False

Let us see the following implementation to get better understanding −

Example Code

Live Demo

def solve(s, t, r):
   if len(r) != len(s) + len(t):
      return False

   if r.startswith(s):
      if r.endswith(t):
         return True
         
   if r.startswith(t):
      if r.endswith(s):
         return True
     
   return False  

s = "world"
t = "hello"
r = "helloworld"
print(solve(s, t, r))

Input

"world", "hello", "helloworld"

Output

True

Arnab Chakraborty

Published on 16-Jan-2021 04:33:33

• Related Questions & Answers
• Check if given string can be formed by concatenating string elements of list in Python
• Check if given string can be split into four distinct strings in Python
• Print the given 3 string after modifying and concatenating
• Generating random strings until a given string is generated using Python
• Check whether the given string is a valid identifier in Python
• Check if a string can be formed from another string using given constraints in Python
• Check if a two-character string can be made using given words in Python
• Program to check whether final string can be formed using other two strings or not in Python
• Check whether two strings are equivalent or not according to given condition in Python
• How to check whether the given strings are isomorphic using C#?
• Check whether the number can be made perfect square after adding 1 in Python
• Python program to check whether a given string is Heterogram or not
• Check whether second string can be formed from characters of first string in Python
• All possible strings of any length that can be formed from a given string?
• Program to check whether we can make k palindromes from given string characters or not in Python?