K Unique Characters Leetcode

For example if s LEETCODE then L T C O D are the unique characters since they appear only once in s therefore countUniqueChars. Aaabbb k 3 There are only two unique characters thus show error message.

Pin By K Himaanshu Shukla On Leet Code Graphing T Code Dislike

HashMap map new HashMap.

K unique characters leetcode. We would record the rightmost position for each character in s ij using a hashmap and when the number of distinct characters exceeds k ie becomes k1 we need to find the leftmost character in the hashmap. When we have 5 distinct characters we need to put the left pointer to the leftmost of all which is O. For example Given s eceba and k 2 T is ece which its length is 3.

Add Two Numbers Medium 3. If stringIn null stringInlength 0 K. S abcabcbb Output.

Pq pqp pqpq qp qpq pq qs Example 2. For example Given s eceba and k 2 T is ece which its length is 3. T is ece which its length is 3.

Formatted question description. If it does not exist return -1. The stop condition is that when the window size is again equal to the K which means the window contains K distinct characters.

If s null slength 0 k 0. S aa k. Given a string find the length of the longest substring T that contains at most k distinct characters.

Int strLength slength. S bbbbb Output. Longest Substring with At Most K Distinct Characters.

S pqpqs k 2 Output. S eceba k 2 Output. S eceba k 2.

Longest Substring with At Most K Distinct Characters Hard Given a string find the length of the longest substring T that contains at most _k _distinct characters. Public class Solution. S eceba k 2.

Thats the minimum steps we need to move forward the end pointer. S pwwkew Output. Int i 0.

T is ece which its length is 3. S aabab k 3 Output. T is ece which its length is 3.

A simple way is to generate all the substring and check each one whether it has exactly k unique characters or not. For example Given s eceba and k 2 T is ece which its length is 3. In this post we will see how we can solve this challenge in C.

The only trick here is we need to check at the last that if the start pointer is out of boundary we still need to check if the largest window size. Public int lengthOfLongestSubstringKDistinctString s int k. 340Longest Substring with At Most K Distinct Characters Given a string find the length of the longest substring T that contains at most k distinct characters.

I start index test every start index to check whether it can be a substring of length K and containing different characters if contains duplicate character break start from next index. Given a string find the length of the longest substring T that contains at most k distinct characters. Given a string s return the first non-repeating character in it and return its index.

LeetCode LeetCode Diary 1. The map track the count of each character if this character is seen the first time we increase the counter for unique character. The answer is b with the length of 1.

If we apply this brute force it would take O nn to generate all substrings and O n to do a check on each one. First Unique Character in a String. Two Sum Easy 2.

Given s eceba and k 2 T is ece which its length is 3. The problem can be solved in O nn. If the given string doesnt have k distinct characters return 0.

The answer is wke with the length of 3. Given a string find the length of the longest substring T that contains at most k distinct characters. Thus overall it would go O nnn.

Public int KSubstringString stringIn int K. Longest Substring with At Most K Distinct Characters. Given a string find the length of the longest substring T that contains at most k distinct characters.

Public class Solution. The answer is abc with the length of 3. Show Company Tags Show Tags Show Similar Problems 快慢指针解决用hashMap存occurence当要减去时如果occurence为1则remove这个entry.

Longest Substring With At Most K Distinct Characters is a LeetCode problem. Count Unique Characters of All Substrings of a Given String. Given a string find the length of the longest substring T that contains at most k distinct characters.

Given a string find the length of the longest substring T that contains at most k distinct characters. Aabbcc k 3 There are substrings with exactly 3 unique characters aabbcc abbcc aabbc abbc Max is aabbcc with length 6. S aa k 1.

For example Given s eceba and k 2 T is ece which its length is 3. Lets define a function countUniqueChars s that returns the number of unique characters on s.

Pin By K Himaanshu Shukla On Leet Code Algorithm Stone Types Of Stones