How should I practice Minimum Digit Changes Between String Halves?

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

Is Minimum Digit Changes Between String Halves associated with JP Morgan Chase?

FastPrep tags this as a JP Morgan Chase online assessment coding practice problem when the problem catalog has that company and stage context.

Minimum Digit Changes Between String Halves

JP Morgan Chase● EasyINTERNNEW GRADOA

Learn

Problem statement

You are given an even-length string s that contains digits only. Split it into two equal halves.

In one operation, choose any position in the first half and replace its digit with any other digit from 0 through 9.

Return the minimum number of operations needed to make the first half an anagram of the second half.

Function

getAnagram(s: String) → int

Examples

Example 1

s = "123212"return = 1

The halves are 123 and 212. Replace digit 3 in the first half with 2, producing 122, which is an anagram of 212.

Example 2

s = "123456"return = 3

The halves 123 and 456 share no digit. Every position in the first half must be replaced, so the minimum is 3.

Constraints

1 <= s.length <= 10^5
s.length is a multiple of 2.
s contains digits only.