js中的运算总结（未完待续

【74由几个1几个5几个10几个20组成】

 var num = 74;
     for(one = 0; one <= num; one++){
         for(five = 0; five <= num/5 ; five++){
             for(ten = 0; ten <= num/5 ; ten++){
                 for(twenty = 0; twenty <= num/20; twenty++){
                     if(one + five*5 + ten*10 + twenty*20 == num){
                         console.log(one + "个1，" + five + "个5，" + ten +"个10，" + twenty + "个20组成。");
                     }
                 }
             }
         }
     }