Check If N and Its Double Exist

Given an array arr of integers, check if there exist two indices i and j such that: i != j 0 <= i, j < arr.length arr[i] == 2 * arr[j] Example 1: Input: arr = [10,2,5,3] Output: true Explanation: For i = 0 and j = 2, arr[i] == 10 == 2 * 5 […]

3. Longest Substring Without Repeating Characters

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 Explanation: The answer is “b”, with the length of 1. Example 3: Input: s = […]

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The Easiest Way to Become a Successful Writer and Authors.

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The Quickest Way to Deliver Your Message? Make It Visual.

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Why We Don’t Have Technical Interviews for Technical Roles at Buffer.

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Why Successful People Wear The Same Thing Every Day.

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What I Learned From Being a Broke, Unemployed Graduate.

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