Reverse Words in a given string-Asked in Goldman Sachs Interviews

Problem Statement:

Given a String S, reverse the string without reversing its individual words. Words are separated by dots.

Input Format

The input consists of a single line containing a string ‘S’.

Output Format:

The output format contains a string which is the reversed version of the given string ‘S’.

Given:

i.like.this.program.very.much

Output:

much.very.program.this.like.i

Explanation of given Test Cases :

After reversing the whole string(not individual words), the input
string becomes much.very.program.this.like.i

Approach:

  • Initially, reverse the individual words of the given string one by one, for the above example, after reversing individual words the string should be “i.ekil.siht.margorp.yrev.hcum”.
  • Reverse the whole string from start to end to get the desired output “much.very.program.this.like.i” in the above example.

Code:

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