numdict[target-nums[i]]=i#这一句后执行其实就避免了出现自己和自己相加的情况,避免使用if,else进行判断 ps.要学会使用leetcode自带的playground去调试代码,因为这个是带有测试用例的,而且可以自定义输入
Today, we learned how to create a singly linkedlist in C#, how to traverse through it. how to add new nodes into singly linkedlist and how to solve one of the most common questions of the technical interviews.If you have any queries reach me @ Linkedin | Github...
System Design: How to design a tiny URL At first glance, this problem seems to very easy. We can solve it with a HashMap. However, if you think it more deeper, you will find out HashMap approach does not have scalablity and persistenc... LeetCode爬坡——第一题:Two Sum tobuildtheH...
I like this difficulty range because I can feel good about myself if I solve a problem by myself because they are usually somewhat hard, and if I am unable to solve them, they aren't super hard to the point of me having trouble with figuring out the solution, I usually just missed ...
The main goal of using DSA is to solve problems effectively and efficiently. How do you assess if your program is efficient? This is where complexities come in, and there are two types:Time Complexity: It measures the time needed to execute the code. Space Complexity: It indicates the ...
Repository files navigation README this contains all the institution an approaches to solve a problem on leetcode platforms About cotaining all codes int java ,how i solve a particular problem Resources Readme Activity Stars 1 star Watchers 1 watching Forks 0 forks Report repository Re...
With RQ1, we assess the ability of ChatGPT to solve a programming problem using C++ and Java. To this end, we chose a straightforward prompt: “Solve this programming problem with C++”, or “Solve this programming problem with Java”. This prompt focuses solely on solving the problem witho...
When you learn dynamic programming in the early stage, you can try to solve it with memoization first. Then transform it into dynamic programming, so that you will feel it when you practice it a few times. After that, you can practice scrolling the array. This technique is very useful and...
All right then, let’s get to the commonly asked Two Number Sum question that we will solve using my current favorite programming language, Go! For reference, I will be solving the question on LeetCode here: Two Sum - LeetCode Given an array of integers nums and an integer target, retur...
I doubled down on doing exercises to do better on my subsequent interviews in other companies. I was getting better after a couple of months of doing Leetcode.com exercises every single day. When I interview Facebook, I got two questions that I had to solve in under 45 minutes. There’...