String slicing in Python to rotate a string

PythonProgrammingServer Side Programming

A string is given, our task is to slicing the string into two way. One is clockwise and another anticlockwise.

1. Left (Or anticlockwise) rotate the given string by d elements (where d <= n).

2. Right (Or clockwise) rotate the given string by d elements (where d <= n).

Example

Input: string = "pythonprogram"
d = 2
Output: Left Rotation: thonprogrampy
Right Rotation: ampythonprogr

Algorithm

Step 1: Enter string.
Step 2: Separate string in two parts first & second, for Left rotation Lfirst = str[0 : d] and Lsecond = str[d :]. For Right rotation Rfirst = str[0 : len(str)-d] and Rsecond = str[len(str)-d : ].
Step 3: Now concatenate these two parts second + first accordingly.

Example Code

def rotate(input,d):
   # Slice string in two parts for left and right
   Lfirst = input[0 : d]
   Lsecond = input[d :]
   Rfirst = input[0 : len(input)-d]
   Rsecond = input[len(input)-d : ]
   print ("Left Rotation : ", (Lsecond + Lfirst) )
      print ("Right Rotation : ", (Rsecond + Rfirst) )
      # Driver program
   if __name__ == "__main__":
      str = input("Enter String ::>")
d=2
rotate(str,d)

Output

Enter String ::> pythonprogram
Left Rotation: thonprogrampy
Right Rotation: ampythonprogr
raja
Published on 26-Sep-2018 10:37:42
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