It seems that coding tests are conducted overseas in interviews with engineers, and in many cases, the main thing is to implement specific functions and classes according to the theme.
Apparently, many engineers take measures on the site called LetCode.
It is a site that trains the algorithmic power that can withstand the coding test that is being done in the early story, and it is an inevitable path for those who want to build a career at an overseas tech company.
I wrote it in a big way, but I have no plans to have such an interview at the moment.
However, as an IT engineer, it would be better to have the same level of algorithm power as a person, so I would like to solve the problem irregularly and write down the method I thought at that time as a memo.
I'm solving it with Python3.
Leet Code Table of Contents Starting from Zero
Right now, I'm prioritizing the Medium of the Top 100 Liked Questions. I solved all Easy, so if you are interested, please go to the table of contents.
Twitter I'm doing it.
** Technical Blog Started! !! ** ** I think the technology will write about LetCode, Django, Nuxt, and so on. ** This is faster to update **, so please bookmark it!
1491. Average Salary Excluding the Minimum and Maximum Salary The difficulty level is Easy.
It's a fairly light issue today.
The problem is given an array of unique integers salary wheresalary [i]is the salary of employee i.
Returns the average salary of the employee, excluding the minimum and maximum salaries.
Example 1:
Input: salary = [4000,3000,1000,2000] Output: 2500.00000 Explanation: Minimum salary and maximum salary are 1000 and 4000 respectively. Average salary excluding minimum and maximum salary is (2000+3000)/2= 2500
Example 2:
Input: salary = [1000,2000,3000] Output: 2000.00000 Explanation: Minimum salary and maximum salary are 1000 and 3000 respectively. Average salary excluding minimum and maximum salary is (2000)/1= 2000
Example 3:
Input: salary = [6000,5000,4000,3000,2000,1000] Output: 3500.00000
Example 4:
Input: salary = [8000,9000,2000,3000,6000,1000] Output: 4750.00000
class Solution:
def average(self, salary: List[int]) -> float:
temp,low,high = 0,float('inf'),float('-inf')
for s in salary:
temp += s
low,high = min(low,s),max(high,s)
return (temp - low - high)/(len(salary)-2)
# Runtime: 36 ms, faster than 59.24% of Python3 online submissions for Average Salary Excluding the Minimum and Maximum Salary.
# Memory Usage: 13.8 MB, less than 100.00% of Python3 online submissions for Average Salary Excluding the Minimum and Maximum Salary.
It was a relatively simple problem.
I don't really like writing in one line, but it may be easier to write in one line.
Exclude the maximum and minimum values from the total sum using min, max, and divide by the number of the excluded minutes, 2, from the length to divide, as shown below. You can solve it by giving it.
class Solution:
def average(self, salary: List[int]) -> float:
return (sum(salary)-min(salary)-max(salary))/(len(salary)-2)
# Runtime: 20 ms, faster than 99.36% of Python3 online submissions for Average Salary Excluding the Minimum and Maximum Salary.
# Memory Usage: 13.9 MB, less than 25.00% of Python3 online submissions for Average Salary Excluding the Minimum and Maximum Salary.
I was tired so I made this simple problem. So that's it for this time. Thank you for your hard work.
Recommended Posts