## LeetCode 75. Sort Colors in Java

In this post we will solve the LeetCode 75. Sort Colors problem using the Java programming language and the VSCode IDE on a Windows computer.

```Given an array nums with n objects colored red, white, or blue,
sort them in-place so that objects of the same color are adjacent,
with the colors in the order red, white, and blue.

We will use the integers 0, 1, and 2 to represent the color red, white, and blue, respectively.

You must solve this problem without using the library's sort function.

Constraints:

o n == nums.length
o 1 <= n <= 300
o nums[i] is 0, 1, or 2.
```

We are given an integer array with values 0, 1, and 2 which represent colors red, white and blue respectively. We must solve the problem without the use of any library sort function. That makes sense because we would only have to sort the input array and return. Continue reading “LeetCode 75. Sort Colors in Java”

## High Point in Array

Good morning! It is Friday and the weekend is just around the corner. In the Twin Cities of Minneapolis and St. Paul we received our first snow dusting of the season. Yesterday early morning I drove my wife to a healthcare facility to get a radiological exam. Traffic was heavier than what we expected. We got back home around 09:00 AM. The rest of the day ended for me at 19:00 PM. It was a very long and exciting day.

As the weather changes, I have slightly modified my workdays. I work in 2-hour blocks. The blocks are dictated by the EyeDefender app. I tend to work four to five blocks during the week and one to two on weekends. After each block I get on a stationary bike and pedal backwards for about two minutes and forward for six. This gives me over half an hour of exercise per day and half on weekends.

Starting this week, I will not stop immediately after EyeDefender tells me to do so. Will continue with the bike exercise after each block. Doing this will reduce the blocks to four on workdays. I guess it is better to continue working past the two hours until I reach a normal breaking point based on the task at hand. Will let you know my findings as far as productivity is related early next year.

One last thing, most of the times that I generate a post, I check on the number of subscribers. Today’s count is 10,025 subscribers Thanks a lot!!! This implies that in the very near future I will, in addition to this post, start a YouTube channel with similar content or will just switch to YouTube and discontinue this blog. One way or the other, I will be getting the necessary video hardware and software tools, and will start experimenting with them. I am planning on having the YouTube channel up and running by January 2022. Continue reading “High Point in Array”

## Merge two Sorted Lists

It seems that the CDC has approved the use of the Pfizer vaccine on 12-16 year old’s. Hopefully most of them will be vaccinated soon. We need to get close to 95% in order to achieve herd immunity and dramatically reduce the chances of new mutations.

While looking at a list in LeetCode, I decided to go after problem 21 Merge Two Sorted Lists. Keep in mind that you do not want to memorize the solution for a large set of problems. You want to develop a sense / intuition on how to approach different type of problems. Continue reading “Merge two Sorted Lists”