Google sheets copy and paste row 120 times in the same sheet - google-sheets

Question

So I have a sheet with about 800 rows. What I need to do is copy and paste each one 120 times. Instead of doing this manually I am hoping there is an automated way to do this in one shot. I have searched for a few things but everything I found had to do with copying the rows conditionally.
I don't need conditions. I just need all, each one of the 800 rows to be duplicated 120 times.
Any help or ideas is greatly appreciated.
Cheers

Answer 1

Modified #SpiderPig code to clone in a interleaved fashion
function duplicateRows() {
var sheet = SpreadsheetApp.getActiveSheet()
var numRows = sheet.getLastRow()
var numColumns = sheet.getLastColumn()
var numberOfClones = 120
for(var i = 0; i < numRows; i++) {
range = sheet.getRange((i*numberOfClones)+ 1, 1, 1, numColumns);
sheet.insertRows((i*numberOfClones)+ 2, numberOfClones-1)
range.copyTo(sheet.getRange((i*numberOfClones)+ 2 , 1, numberOfClones-1, numColumns));
}
}
Also instead of using a loop with range.copyTo(destination) to paste 120 times, you can expand the destination range to 120 rows. It will automatically paste the same value over the entire range.
So instead of this
for(var i = 1; i <= 120; i++) {
range.copyTo(sheet.getRange(numRows * i + 1, 1, numRows, numColumns));
}
you can do this once
range.copyTo(sheet.getRange(numRows * i + 1, 1, 120*numRows, numColumns));

Answer 2

Here is a script that will copy all the rows in the current sheet 120 times.
function duplicateRows() {
var sheet = SpreadsheetApp.getActiveSheet(),
numRows = sheet.getLastRow(),
numColumns = sheet.getLastColumn(),
range = sheet.getRange(1, 1, numRows, numColumns);
for(var i = 1; i <= 120; i++) {
range.copyTo(sheet.getRange(numRows * i + 1, 1, numRows, numColumns));
}
}