4월 26일

• 사칙연산

var readline = require('readline');
var rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

rl.on('line',function(answer) {
   var input = answer.split(' '),
       a = parseInt(input[0]),
       b = parseInt(input[1]),
       c = parseInt(input[2]);

   console.log((a+b)%c);
   console.log((a%c+b%c)%c);
   console.log((a*b)%c);
   console.log((a%c*b%c)%c);
   rl.close();
});

• 설탕가계(예외를 모르겠다)

var readline = require('readline');
var rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

rl.on('line',function(answer) {
  var input = answer,
      a = parseInt(input);
  if(a>=5){
    if(a%5 >3){
      console.log(parseInt(a/5)+2);
    }else if(a%5 == 0){
      console.log(parseInt(a/5));
    }else{
      console.log(parseInt(a/5)+1);
    }
  }else{
    if(a%3 == 0){
      console.log(parseInt(a/3));
    }else{
      console.log(parseInt(a/3)+1);
    }
  }
  rl.close();
});

4월27일

• 2743번

def check(year):
    if year%400==0:
        print(1)
    elif year%100==0:
        print(0)
    elif year%4==0:
        print(1)
    else:
        print(0)

year = int(input())
while not((1 <= year) and (year <= 4000)):
    year = int(input())

check(year)

백준이 좀 ㅈ같은게 어떤건 반드시 true/false를 확인하고 어떤건 확인안하고 그지같은 면이 있음.

5월 5일

• 10845번

function Queue(){
  this.dataStore = [];
};

Queue.prototype.enqueue = function(element) {
  this.dataStore.push(element);
};

Queue.prototype.pop = function(){
  var poped = this.dataStore.shift();
  console.log(poped ? poped : -1);
};

Queue.prototype.front = function() {
  console.log(this.dataStore[0] ? this.dataStore[0] : -1);
};

Queue.prototype.back = function() {
  var last = this.dataStore[this.dataStore.length-1];
  console.log(last ? last : -1);
};

Queue.prototype.size = function() {
  console.log(this.dataStore.length);
  return this.dataStore.length;
};

Queue.prototype.empty = function() {
  this.dataStore.length == 0 ? console.log(1) : console.log(0);
};


var readline = require('readline'),
    rl = readline.createInterface(process.stdin, process.stdout);

rl.question('몇번 반복할 깝쇼?', function(answer) {
  var newQue = new Queue(), i = 0;

  rl.prompt();
  rl.on('line', function(line) {
    var input = line.split(' ');

    if (input[0] === "push"){
      newQue.enqueue(input[1]);
      i++;
    }else{
      if (input[0] !== "dataStore") {
        newQue[input[0]]();
        i++;
      }else{
        newQue[input[0]];
        i++;
      }
    }
    if (i == answer) { rl.close();}
  });
});

ㅂㅐㄱ준이 진짜 개열받는게 뭐가틀렸는지를 안말해주는게 진짜 개열받.