sum

问题 So I have this dummy 2d array: int mat[][] = { {10, 20, 30, 40, 50, 60, 70, 80, 90}, {15, 25, 35, 45}, {27, 29, 37, 48}, {32, 33, 39, 50, 51, 89}}; I want to add up all the values by columns so it would add 10 + 15 + 27 + 32 and return 84 and so on. I have this so far: public void sum(int[][] array) { int count = 0; for (int rows = 0; rows < array.length; rows++) { for (int columns = 0; columns < array[rows].length; columns++) { System.out.print(array[rows][columns] + "\t"); count += array[0]

问题 item_id rate status --------- ----------- ------ 1 12 credit 2 10 credit 3 10 credit 4 20 cash 5 55 credit I have the above table, A user inputs and amount of 25. Now I want to update the status of the rows having credit as status from credit to cash until the sum of rate is 25, so in the above table the top 1 rows having a sum of 22 should get a status of cash. Since the user input is 25, I still have a balance of 3 (25-22), this balance should be deducted from the third row making the third

问题 item_id rate status --------- ----------- ------ 1 12 credit 2 10 credit 3 10 credit 4 20 cash 5 55 credit I have the above table, A user inputs and amount of 25. Now I want to update the status of the rows having credit as status from credit to cash until the sum of rate is 25, so in the above table the top 1 rows having a sum of 22 should get a status of cash. Since the user input is 25, I still have a balance of 3 (25-22), this balance should be deducted from the third row making the third

问题 Say I have the following basic spreadsheet: A B C D 1 -2 4 2 12 2 -1 1 0 3 0 0 0 22 4 1 1 2 12 5 2 4 6 6 3 9 12 The A column has integers from -2 to 3. The B column has the a column value squared. The C column is the row sum of A and B so C1 is =SUM(A1:B1). D1 has =MAX(C1:C6) and this max is the result I need to get with a single formula. D3 is =MAX(SUM(A1:B6)) entered with Ctrl+Shift+Enter, but it just results in a regular sum. D4 is =MAX(A1:A6+B1:B6) with ctrl+shift+enter, and this works

问题 I am looking at a stackoverflow post over here: R: Count Number of Observations within a group Here, daily data is created and summed/grouped at monthly intervals (as well as weekly intervals): library(xts) library(dplyr) #create data date_decision_made = seq(as.Date("2014/1/1"), as.Date("2016/1/1"),by="day") date_decision_made <- format(as.Date(date_decision_made), "%Y/%m/%d") property_damages_in_dollars <- rnorm(731,100,10) final_data <- data.frame(date_decision_made, property_damages_in

问题 I am looking at a stackoverflow post over here: R: Count Number of Observations within a group Here, daily data is created and summed/grouped at monthly intervals (as well as weekly intervals): library(xts) library(dplyr) #create data date_decision_made = seq(as.Date("2014/1/1"), as.Date("2016/1/1"),by="day") date_decision_made <- format(as.Date(date_decision_made), "%Y/%m/%d") property_damages_in_dollars <- rnorm(731,100,10) final_data <- data.frame(date_decision_made, property_damages_in

问题 I am looking at a stackoverflow post over here: R: Count Number of Observations within a group Here, daily data is created and summed/grouped at monthly intervals (as well as weekly intervals): library(xts) library(dplyr) #create data date_decision_made = seq(as.Date("2014/1/1"), as.Date("2016/1/1"),by="day") date_decision_made <- format(as.Date(date_decision_made), "%Y/%m/%d") property_damages_in_dollars <- rnorm(731,100,10) final_data <- data.frame(date_decision_made, property_damages_in

问题 I'm kind of new to MySQL and I need help. I have a table Invoices and a table Payments . I am having trouble generating a report that will show all invoices that were paid in In Full or a Partial Payment was received by 12/31/2019. One Invoice can be paid by one or more payments (For example a partial payment, such as 25% down, and the remainder payment on completion of work). How can I create SQL query that will select ALL records from Invoices and then for each Invoice select matching

问题 I'm kind of new to MySQL and I need help. I have a table Invoices and a table Payments . I am having trouble generating a report that will show all invoices that were paid in In Full or a Partial Payment was received by 12/31/2019. One Invoice can be paid by one or more payments (For example a partial payment, such as 25% down, and the remainder payment on completion of work). How can I create SQL query that will select ALL records from Invoices and then for each Invoice select matching

问题 My problem is the sumif part, it could not search all cells which contains the string 'model' and add up the value pertaining to 'model'. Please help to check if there is any error when I am using the sumif function. Sub Test() Dim file As String Dim file1 As String Dim wb As Workbook Dim wb1 As Workbook Dim ws As Worksheet Dim ws1 As Worksheet Dim ws2 As Worksheet Dim i As Variant Dim y As Variant Dim LastRow As Long Dim LastRow2 As Long Dim Model As String Dim NextMonth As String Dim SumUp