How should I practice Remove Duplicate Characters?

Start by reading the full statement, solve the visible examples, then compare the pattern against related NatWest Group online assessment problems in FastPrep.

Is Remove Duplicate Characters associated with NatWest Group?

FastPrep tags this as a NatWest Group coding interview or online assessment practice problem when the problem catalog has that company context.

Problem · String

Remove Duplicate Characters

Learn this problem

● EasyNatWest GroupOA

Problem statement

You are given a string s. Remove duplicate characters while preserving the order of their first occurrence, and return the resulting string.

Function

removeDuplicateCharacters(s: String) → String

Examples

Example 1

s = "banana"return = "ban"

The first occurrences are b, a, and n. Later repeated characters are skipped.

The source shared the rule but did not include this exact sample. FastPrep added this small example so the behavior can be checked directly.

Problem statement

Function

Examples

Example 1

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