How should I practice Triplets With Unique Chars?

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

Is Triplets With Unique Chars associated with ZipRecruiter?

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

Triplets With Unique Chars

ZipRecruiter● EasyINTERNOA

Learn

Problem statement

Given a string text, count its contiguous substrings of length three whose three characters are all different.

Return the number of such triplets. Overlapping triplets are counted separately.

Function

tripletsWithUniqueChars(text: String) → int

Examples

Example 1

text = "abcdaaae"return = 3

The valid triplets are abc, bcd, and cda, so the answer is 3.

Example 2

text = "abacaba"return = 2

The valid triplets are bac and cab, so the answer is 2.

Constraints

1 <= text.length <= 1000