I have a requirement where I need to reshape data in a csv. Below is the csv

Set No       ;Res No        ;A     ;B    ;C     
1451         ;1123          ;0     ;1    ;2000  
1351         ;1133          ;0     ;2    ;3000  

And here is the desired output.

Set No     ;Res No      ;Attrib     ;Value     
1451       ;1123        ;A          ;0
1451       ;1123        ;B          ;1
1451       ;1123        ;C          ;2000
1351       ;1133        ;A          ;0
1351       ;1133        ;B          ;2
1351       ;1133        ;C          ;3000

I tried the below code but it is running an infinite loop

var text = a

var linearray = String(text).split("\r\n")
var len = linearray.length
for (var i=0; i<linearray.length-1;i++)

{

    var temparray = linearray[i].split(";")

    for(j = 0;j<temparray.length-1;j++)
{
       temparray.push([]);
}
     
    

    linearray[i] = temparray.join(";")

}


linearray.join("\r\n")

"a" in the code contains the value of the csv file. Can you please suggest what I am doing wrong and what code should I write to get the desired result.