Reverse last two characters with space
Quick Overview
This question evaluates basic string manipulation and character indexing skills, including handling of edge cases when treating input as a raw character array. Commonly asked in Coding & Algorithms interviews, it tests practical implementation ability and attention to indexing and boundary conditions, classifying the task as a practical application in the string-manipulation domain.
IBM
Mar 1, 2026, 12:00 AM
Software Engineer
Technical Screen
Coding & Algorithms
2
0
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Problem
Given a non-empty string s with length at least 2, output a new string consisting of the last two characters of s in reverse order, separated by a single space.
Input
-
A string
s(length>= 2).
Output
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A string of the form:
s[last] + " " + s[second_last].
Example
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Input:
"bat" -
Output:
"t a"
Edge Cases
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smay contain letters, digits, or other characters; treat it as a raw character array/string. -
Example:
"ab" -> "b a".