Problem: Check if One String Swap Can Make Strings Equal

Medium

30 min

Understand how to check if two equal-length strings can be made the same by performing at most one swap operation on exactly one string. Explore techniques for tracking character differences and apply this pattern to solve permutation and anagram style problems in coding interviews.

Statement

You are given two strings s1 and s2 of equal length. A string swap operation allows you to choose two indices in a string (not necessarily different) and swap the characters at those indices.

Determine whether it is possible to make the two strings equal by performing at most one string swap on exactly one of the strings. Return TRUE if this is possible, and FALSE otherwise.

Note: The swap is performed on exactly one of the two strings, and you may choose to perform zero or one swap.

Constraints:

$1 \leq$ s1.length, s2.length $\leq 100$
s1.length $==$ s2.length
s1 and s2 consist of only lowercase English letters.

Problem: Check if One String Swap Can Make Strings Equal

Medium

30 min

Statement

You are given two strings s1 and s2 of equal length. A string swap operation allows you to choose two indices in a string (not necessarily different) and swap the characters at those indices.

Determine whether it is possible to make the two strings equal by performing at most one string swap on exactly one of the strings. Return TRUE if this is possible, and FALSE otherwise.

Note: The swap is performed on exactly one of the two strings, and you may choose to perform zero or one swap.

Constraints:

$1 \leq$ s1.length, s2.length $\leq 100$
s1.length $==$ s2.length
s1 and s2 consist of only lowercase English letters.

Problem: Check if One String Swap Can Make Strings Equal

Statement

Examples

Understand the problem

Figure it out!

Try it yourself

Problem: Check if One String Swap Can Make Strings Equal

Statement

Examples

Understand the problem

Figure it out!

Try it yourself