var x = new Array(); var rank = new Array(); function sample() { x[1]=0; x[2]=0; x[0]=0; for(s=1;s<1001;s++){ n=0; if(Math.random()>0.5)n=n+1; if(Math.random()>0.5)n=n+1; x[n]=x[n]+1; } $("#memo").html(x[1]); }