How should I practice Minimum Substrings Without Repeating Characters?

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Problem · String

Minimum Substrings Without Repeating Characters

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Problem statement

Given a string S, find the minimum number of substrings without repeating characters.

Function

minimumSubstringsWithoutRepeatingCharacters(S: String) → int

Examples

Example 1

S = "word"return = 1

The answer is 1 as "word" doesn't have any duplicates.

Example 2

S = "dddd"return = 4

The answer is 4 as we can only form substrings "d", "d", "d", "d".

Example 3

S = "cycle"return = 2

The answer is 2 as we can make substrings "cy" and "cle".