monkey.js

function monkeyRow(diff,max,op){
    var a=1;
    var b=a+diff;
    var ret=[];
    
    while(b<=max){
	ret.push(op(a,b));
	a++;
	b++;
    }

    ret.push(op(a,a));

    return ret;
}

function monkeyPyramid(max,op){
    var rows=[];
    var diff=max;
    while(diff>0){
	rows.push(monkeyRow(diff,max,op));
	diff--;
    }

    return rows;
}

function printRows(rows){
    for(var r=0;r<rows.length;r++){
	var str='';
	for(var i=0;i<rows[r].length;i++){
	    str+=rows[r][i]+' ';
	}
	print(str);
    }
}

function mul(a,b){
    return a*b;
}

function mod(a,b){
    return a%b;
}