The out of this code is 337 but why?

Question

function mlt(a, b) {
if(!(a&&b)){
return 0;
} else if(b==1){
return a;
} else {
return (a + mlt(a, b-1));
}
}
document.write(mlt(3, 11));
document.write(mlt(7, 1));

Answer 1

Romjan Ali

else part will be execute till b = 1

so 3 + 3 + 3 + 3.....till 11 times so total = 3 * 11 = 33

Now for mlt(7, 1) will be only once because b = 1 so mlt function will return 7

So 337

Answer 2

You forgot to put newline between two print statements, so two results 33 & 7 are printed on the same line (337)

Last 3 lines should be
document.write(mlt(3,11));
document.write("\n");
document.write(mlt(7,1));