How should I practice Largest Number?

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

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

Problem · Array

● Medium

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Given an array of nonnegative integers nums, arrange them so that their decimal representations form the largest possible number.

Return the result as a string. If every number is zero, return "0".

largestNumber(nums: int[]) → String

nums = [10,2]return = "210"

Placing 2 before 10 produces the larger concatenation.

nums = [3,30,34,5,9]return = "9534330"

Ordering by pairwise concatenation places 9, 5, 34, 3, then 30.