Let Code Day73 Starting from Zero "1491. Average Salary Excluding the Minimum and Maximum Salary"

Overview

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.

Leetcode

I'm solving it with Python3.

Leet Code Table of Contents Starting from Zero

Last time Leet Code Day72 starting from zero "1498. Number of Subsequences That Satisfy the Given Sum Condition"

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!

problem

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

solution

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

Let Code Day73 Starting from Zero "1491. Average Salary Excluding the Minimum and Maximum Salary"
Let Code Day49 starting from zero "1323. Maximum 69 Number"
Let Code Day18 starting from zero "53. Maximum Subarray"
Let Code Day 64 starting from zero "287. Find the Duplicate Number"
Let Code Day7 starting from zero "104. Maximum Depth of Binary Tree"
Let Code Day5 starting from zero "1266. Minimum Time Visiting All Points"
Let Code Day16 Starting from Zero "344. Reverse String"
Let Code Day89 "62. Unique Paths" Starting from Zero
Let Code Day 55 "22. Generate Parentheses" Starting from Zero
Let Code Day 13 "338. Counting Bits" Starting from Zero
Let Code Day71 Starting from Zero "1496. Path Crossing"
Let Code Day 61 "7. Reverse Integer" starting from zero
Let Code Day 82 "392. Is Subsequence" Starting from Zero
Let Code Day51 Starting from Zero "647. Palindromic Substrings"
Let Code Day 50 "739. Daily Temperatures" Starting from Zero
Let Code Day 15 "283. Move Zeroes" starting from zero
Let Code Day14 starting from zero "136. Single Number"
Let Code Day 91 "153. Find Minimum in Rotated Sorted Array" starting from zero
Let Code Day 43 "5. Longest Palindromic Substring" Starting from Zero
Let Code Day74 starting from zero "12. Integer to Roman"
Let Code Day 42 "2. Add Two Numbers" Starting from Zero
Let Code Day57 Starting from Zero "35. Search Insert Position"
Let Code Day47 Starting from Zero "14. Longest Common Prefix"
Let Code Day78 Starting from Zero "206. Reverse Linked List"
Let Code Day1 Starting from Zero "1389. Create Target Array in the Given Order"
Let Code Day10 Starting from Zero "1431. Kids With the Greatest Number of Candies"
Let Code Day 37 Starting from Zero "105. Construct Binary Tree from Preorder and Inorder Traversal"
Let Code Day 19 Starting from Zero "121. Best Time to Buy and Sell Stock"
Let Code Day 44 "543. Diameter of Binary Tree" starting from zero
Let Code Day 84 starting from zero "142. Linked List Cycle II"
Let Code Day24 Starting from Zero "21. Merge Two Sorted Lists"
Let Code Day12 Starting from Zero "617. Merge Two Binary Trees"
Let Code Day2 Starting from Zero "1108. Defanging an IP Address"
Let Code Day70 Starting from Zero "295. Find Median from Data Stream"
Let Code Day81 "347. Top K Frequent Elements" Starting from Zero
Let Code Day48 Starting from Zero "26. Remove Duplicates from Sorted Array"
Let Code Day87 Starting from Zero "1512. Number of Good Pairs"
Let Code Day 79 "1282. Group the People Given the Group Size They Belong To" Starting from Zero
Let Code Day75 starting from scratch "15.3 Sum"
Let Code Day67 Starting from Zero "1486. XOR Operation in an Array"
Let Code Day56 Starting from Zero "5453. Running Sum of 1d Array"
Let Code Day 29 "46. Permutations" starting from scratch
Let Code Day86 Starting from Zero "33. Search in Rotated Sorted Array"
Let Code Day92 Starting from Zero "4. Median of Two Sorted Arrays"
Let Code Day53 Starting from Zero "1365. How Many Numbers Are Smaller Than the Current Number"
Let Code Day72 Starting from Zero "1498. Number of Subsequences That Satisfy the Given Sum Condition"
Let Code Day 35 "160. Intersection of Two Linked Lists" Starting from Zero
Let Code Day83 Starting from Zero "102. Binary Tree Level Order Traversal"
Let Code Day 40 Starting from Zero "114. Flatten Binary Tree to Linked List"
Let Code Day59 starting from zero "1221. Split a String in Balanced Strings"
Let Code Day 11 Starting from Zero "1315. Sum of Nodes with Even-Valued Grandparent"
Let Code Day6 Starting from Zero "1342. Number of Steps to Reduce a Number to Zero"
Let Code Day 41 "394. Decode String" starting from scratch
Let Code Day 25 "70. Climbing Stairs" starting from scratch
Let Code Table of Contents Starting from Zero
Let Code Day69 starting from scratch "279. Perfect Squares"
Let Code Day 34 starting from scratch "118. Pascal's Triangle"
Let Code Day85 starting from scratch "6. ZigZag Conversion"
Let Code Day20 starting from scratch "134. Gas Station"
Let Code Day 88 "139. Word Break" starting from scratch
Let Code Day 28 "198. House Robber" starting from scratch