I am trying to count how many cells do not start with U, D, or R, appear before 15:00 pm and match a certain date (A4). I am using this function: =COUNTIFS(Sheet1!$B$2:$B$1088,A4,Sheet1!$C$2:$C$1088,"<>U*",Sheet1!$C$2:$C$1088,"<>D*",Sheet1!$C$2:$C$1088,"<>R*",Sheet1!$D$2:$D$1088,"<15:00") Column B in Sheet1 contains all the dates, column C in Sheet1 contains the cells that either start with U, D, R, or […]

# Tag: r

I am trying to count how many cells do not start with U, D, or R, appear before 15:00 pm and match a certain date (A4). I am using this function: =COUNTIFS(Sheet1!$B$2:$B$1088,A4,Sheet1!$C$2:$C$1088,"<>U*",Sheet1!$C$2:$C$1088,"<>D*",Sheet1!$C$2:$C$1088,"<>R*",Sheet1!$D$2:$D$1088,"<15:00") Column B in Sheet1 contains all the dates, column C in Sheet1 contains the cells that either start with U, D, R, or […]

This problem comes from a leetcode problem called "3sum." I will include the problem statement, as it might be helpful in answering my questions. Problem Statement: Given an array nums of n integers, are there elements a, b, c in nums such that a + b + c = 0? Find all unique triplets in […]

I tried merging 2 arrays using string operator. Following case works fine, + operator accepts char* and string. string s = "";; char a[5] = { ‘f’, ‘i’, ‘r’, ‘s’, ‘t’ }; char b[6] = { ‘s’, ‘e’, ‘c’, ‘o’, ‘n’, ‘d’ }; s = a + string(b); But this case does not work fine […]

I work in Linux os. I want to delete older folders in a path to a certain number (e.g., 30) of last folders using python’s subprocess. Through a search survey, I have tried to run the following commands. p = subprocess.run(["rm", "-r", "`ls -t | awk ‘NR>30’`"]) or cmd = "rm -r `ls -t | […]

One of my friends and I were discussing the differences between Dynamic Programming, Monte-Carlo, and Temporal Difference (TD) Learning as policy evaluation methods – and we agreed on the fact that Dynamic Programming requires the Markov assumption while Monte-Carlo policy evaluation does not. However, he also pointed out that Temporal Difference Learning cannot handle non-Markovian […]

I try to make a physics engine to calculate orbit. But I got too big results and too small results in lenght beetween the Sun and Mars. Position changing absurdly 5*E-70455 to -E187886 Can you help me: Engine Code import decimal G = decimal.Decimal(1) dt = decimal.Decimal(0.001) import matplotlib.pyplot as plt from Planets import planetList […]

I am trying to create a connection with a wss endpoint. My assumption is I make an endpoint on my system (socket) and listen on it, and create a client to connect to the endpoint of the website. I am trying to use websocket.(*dialer).Dial() from gorilla websocket library. What I am having problem with is […]