for each row add duplicates with change of 2 cells - google-apps-script

Question

I have a bunch of rows and I want to append duplicates except change two of the cells.
I need each person to have a row for 15000, 20000, 25000 for each 24 and 36 (if this makes sense?)
Input:
A B C D
1 15000 24 Susan Smith
2 15000 24 John Deer
Expected output
A B C D
1 15000 24 Susan Smith
2 20000 24 Susan Smith
3 25000 24 Susan Smith
4 15000 36 Susan Smith
5 20000 36 Susan Smith
6 25000 36 Susan Smith
7 15000 24 John Deer
8 20000 24 John Deer
9 25000 24 John Deer
10 15000 36 John Deer
11 20000 36 John Deer
12 25000 36 John Deer
I understand that I need to do a function that for each row copies and appends the row, but am unsure how this is done.

Answer 1

I believe your goal as follows.
You want to achieve the conversion in your question.
For example, when the values of the columns "C" and "D" are Susan and Smith, respectively, you want to put the following values to the Spreadsheet.
15000 24 Susan Smith
20000 24 Susan Smith
25000 24 Susan Smith
15000 36 Susan Smith
20000 36 Susan Smith
25000 36 Susan Smith
You want to achieve this using Google Apps Script.
In this case, I would like to propose the following flow.
Retrieve the values from the columns "C" and "D" from the source sheet.
Remove the empty rows.
Create an array for putting values using the values of 15000, 20000, 25000 and 24, 36 for the columns "A" and "B", respectively.
Put the values to the destination sheet.
When above flow is reflected to a Google Apps Script, it becomes as follows.
Sample script:
Please copy and paste the following script to the script editor of Spreadsheet. And, please set the variables of srcSheetName and dstSheetName, and run the function of myFunction.
function myFunction() {
const srcSheetName = "Sheet1"; // Please set the source sheet name.
const dstSheetName = "Sheet2"; // Please set the destination sheet name.
const ss = SpreadsheetApp.getActiveSpreadsheet();
// 1. Retrieve the values from the columns "C" and "D".
const srcSheet = ss.getSheetByName(srcSheetName);
const values = srcSheet.getRange("C1:D" + srcSheet.getLastRow()).getValues();
// 2. Remove the empty rows.
const v = values.filter(([c,d]) => c && d);
// 3. Create an array for putting values using the values of `15000, 20000, 25000` and `24, 36` for the columns "A" and "B", respectively.
const colA = [15000, 20000, 25000];
const colB = [24, 36];
const res = v.reduce((ar, [c,d]) => {
colB.forEach(b => colA.forEach(a => ar.push([a, b, c, d])));
return ar;
}, []);
// 4. Put the values to the destination sheet.
const dstSheet = ss.getSheetByName(dstSheetName);
dstSheet.getRange(1, 1, res.length, res[0].length).setValues(res);
}
Note:
If you want to use above script as the custom function, you can also use the following script. In this case, please copy and paste the following script to the script editor of Spreadsheet. And, please put the custom function of =SAMPLE(C1:D) to a cell. By this, the result values are obtained.
const SAMPLE = values => values
.filter(([c,d]) => c && d)
.reduce((ar, [c,d]) => {
[24, 36].forEach(b => [15000, 20000, 25000].forEach(a => ar.push([a, b, c, d])));
return ar;
}, []);
References:
getValues()
setValues(values)
reduce()
forEach()
Custom Functions in Google Sheets