I have 2 lists: list1 = [ { "address": "1000", "amount": 0 }, { "address": "2000", "amount": 0 }, { "address": "3000", "amount": 0 }, { "address": "4000", "amount": 20 } ] list2 = [ { "account": "1000", "balance": 100 }, { "account": "2000", "balance": 200 }, { "account": "3000", "balance": 300 } ] I… Read More Find different values between 2 lists of dictionaries with different keys
I need to get a DataFrame with column difference of column that I choose (for example the last one) I tried using df.diff(axis=1, periods=1) will count column difference with the next column. However, I want to get difference of columns with exactly one column (last one). >Solution : Use DataFrame.sub for subtract by last column… Read More How to get difference of columns in DataFrame Pandas?
i have this audit table User date text text 2 u1 2023-01-01 hi yes u1 2022-12-20 hi no u1 2022-12-01 hello maybe And i need as a result, something like this: User date text text 2 u1 2023-01-01 null x u1 2022-12-20 x x u1 2022-12-01 null null So i can know wich column change… Read More In PostgreSQL, how can I optimize a query with which I obtain the differences between the current column and the immediately previous one?
i am interested in generating efficient c/c++ code to get the differences between two time series. More precise: The time series values are stored as uint16_t arrays with fixed and equal length == 128. I am good with a pure c as well as a pure c++ implementation. My code examples are in c++ My… Read More C/C++ fast absolute difference between two series
So, I am trying to turn a number to binary, which seems fine in both javascript and python, but my issue is that when I do so, they both return a different binary string. I enter: 585190997647163394 JavaScript returns: 100000011111000001000001110010100100100001000000000000000000 Python returns: 100000011111000001000001110010100100100001000000000000000010 If you can´t see the difference, the penultimate digit in the string… Read More Different binary outputs from js and py
Suppose I have a reverse-sorted list of doubles: {3, 2, 1} I want to find the sum of all the positive differences between possible pairs of numbers. In this case, that would be (3-2)+(3-1)+(2-1) = 4. I know that going through all the pairs is an option, but this takes O(n^2) time. Any idea on… Read More Difference of all possible pairs of numbers in an array
I am trying to find the time (in days) until next occurrence of each specific value. For example, say I have the data below: column1 created_at 0 A 2018-09-03 1 B 2018-09-07 2 B 2018-09-08 3 A 2018-09-09 4 B 2018-09-12 The goal is to get time difference for each value in column1 chronologically. At… Read More Time until next occurence of value in pandas dataframe
#include <stdio.h> int avg(int []); void main(){ int average; int marks[5]={10,15,20,30,45}; printf("%d\n",sizeof(marks)); // answer is 20(as expected) avg(marks); } int avg(int marks[]){ int sum=0; printf("%d\n",sizeof(marks)); // answer is 8(why???) } In this code, I was trying to print the sizeof the integer pointer marks. When I print the sizeof the marks inside the main method… Read More sizeof() gives different results for the same object
I have a dataset with the following structure: I would like to make the difference between two variables in the same group. Thus, the result I wish to obtain is the following: Note that the difference must always be equal to or bigger than 0. I would like to solve it using R. >Solution :… Read More Difference between two variables in R within the same group
I have a data frame df ID scores 1 2.1 2 1.3 3 -1 4 -3 5 2.4 I am interested in calculating a difference matrix that contains the difference of each element from the column scores with every element of the same column (including itself). My desired output is something like this: 1 2… Read More Difference Matrix between all elements of a column