How should I practice Check if One String Swap Can Make Strings Equal?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Bloomberg LP phone screen problems in FastPrep.

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FastPrep tags this as a Bloomberg LP phone screen coding practice problem when the problem catalog has that company and stage context.

Check if One String Swap Can Make Strings Equal

Bloomberg LP● EasyNEW GRADPHONE SCREEN

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Problem statement

Given two strings first and second of equal length, return true if they are already equal or can be made equal by swapping exactly two positions in first. Otherwise return false.

Function

areAlmostEqual(first: String, second: String) → boolean

Examples

Example 1

first = "bank"second = "kanb"return = true

Swapping indices 0 and 3 in first produces second.

Example 2

first = "attack"second = "defend"return = false

More than two positions differ.

Constraints

1 <= first.length == second.length <= 10^5.
Both strings contain lowercase English letters.