Determine if a string s1 is a rotation of another string s2, by calling (only once) a function is_rotation.

Constraints

• Can we assume the string is ASCII?
  • Yes
  • Note: Unicode strings could require special handling depending on your language
• Is this case sensitive?
  • Yes
• Can we use additional data structures?
  • Yes
• Can we assume this fits in memory?
  • Yes

Instructions:

• Program should be written in file build.py

• Function name should be is_rotation.

• Input

   Type:  String
   Value: s1 = 'hello'
          s2 = 'ohleol'
  

• Expected Output

    Type:  Boolean
    Value: False