Hi DLU crew, I hope everyone enjoyed their 4th and are doing well! As always make sure to take some time to enjoy yourself and make time to be around those you care about, enjoy the newsletter and stay safe.

The Coding Puzzle 🧩

Solution for last week:

class Solution:
    def lengthOfLongestSubstring(self, s: str) -> int:
        n = len(s)
        ans = 0
        # mp stores the current index of a character
        mp = {}

        i = 0
        # try to extend the range [i, j]
        for j in range(n):
            if s[j] in mp:
                i = max(mp[s[j]], i)

            ans = max(ans, j - i + 1)
            mp[s[j]] = j + 1

        return ans

This week's puzzle

Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.

You may assume that each input would have exactly one solution, and you may not use the same element twice.

You can return the answer in any order.

Example 1:

Input: nums = [2,7,11,15], target = 9
Output: [0,1]
Output: Because nums[0] + nums[1] == 9, we return [0, 1].

Example 2:

Input: nums = [3,2,4], target = 6
Output: [1,2]

 Developer Headlines 📢

❇️ NO!! GitHub Copilot Will NOT Steal Your Job

❇️ 3 Phases to a Safe and Successful Cloud Migration

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Well, that's all we have for this week's issue. A quick reminder to add our Podcast on your favorite platform and subscribe to our YouTube page!

Sincerely,

The DLU Team