How should I practice Reverse and Append?

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

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Problem · String

Reverse and Append

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Problem statement

Given a string, you can reverse part of it from any index towards left or right.

Output all possible list of strings.

Function

reverseAndAppend(s: String) → List<String>

Complete the function reverseAndAppend in the editor.

reverseAndAppend has the following parameter:

String s: the original string

Returns

List: the list of all possible strings after reversing and appending

Halooo~~ Uber assessment comes with 4 coding questions. The other 3 are in here 🍉 -

Generate Arrays (Click to view surprise :) 🍊

Examples

Example 1

s = "dbaacca"return = ["bdaacca", "abdacca", "dbaacac"]

From index 1, reverse db-> append with rest of original -> bdaacca From index 2, reverse dba -> append with rest of original -> abdacca From index 5, reverse ca towards right -> append with rest of original -> dbaacac Output all possible list of strings PPS: I have a strong gut feeling that these might not be the correct versions of the output. The current outputs are just placeholders. I'll come back to update them once I find a more reliable source in the future. As for how far in the future… that's a myth no one knows. I'll see you next time!

Problem statement

Function

Examples

Example 1

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