Given a string s, find the length of the longest substring T that contains at most k distinct characters.

For example, Given s = `"eceba"`

, `k = 3`

,

T is `"eceb"`

which its length is `4`

.

solution

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# Longest Substring with At Most K Distinct Characters

Given a string s, find the length of the longest substring T that contains at most k distinct characters.

For example, Given s = `"eceba"`

, `k = 3`

,

T is `"eceb"`

which its length is `4`

.

solution

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