Question Link : https://leetcode.com/problems/find-k-length-substrings-with-no-repeated-characters/

Difficulty: Medium

Premium: True

Question

Given a string s and an integer k, return the number of substrings in s of length k with no repeated characters.   Example 1:

Input: s = "havefunonleetcode", k = 5 Output: 6 Explanation: There are 6 substrings they are …

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Question Link : https://leetcode.com/problems/subarray-product-less-than-k/

Difficulty: Medium

Premium: False

Question

Given an array of integers nums and an integer k, return the number of contiguous subarrays where the product of all the elements in the subarray is strictly less than k.   Example 1:

Input: nums = [10,5,2 …

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Question Link : https://leetcode.com/problems/longest-repeating-character-replacement/

Difficulty: Medium

Premium: False

Question

You are given a string s and an integer k. You can choose any character of the string and change it to any other uppercase English character. You can perform this operation at most k times. Return the …

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Question Link : https://leetcode.com/problems/longest-substring-without-repeating-characters/

Difficulty: Medium

Premium: False

Question

Given a string s, find the length of the longest substring without repeating characters.   Example 1:

Input: s = "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3.

Example 2:

Input: s = "bbbbb" Output: 1 …

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Question Link : https://leetcode.com/problems/maximum-points-you-can-obtain-from-cards/

Difficulty: Medium

Question

There are several cards arranged in a row, and each card has an associated number of points. The points are given in the integer array cardPoints. In one step, you can take one card from the beginning or from the …

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