Turing Coding Challenge Practise Test

gistfile1.txt

// console.log("Hello, World!");
var calPoints = function(ops) {
  result = null;
  output = [];
  checks = true;
  
  // check constraints
  
  // check if operations length constraints is met
  if(!(ops.length >= 1 || ops.length <= 1000))
  {
    checks = false;
  }
  
  // check if operations constraints is met
  for (var i = 0; i < ops.length; i++) {
    if(!((ops[i]*1 >= (-3*104) || ops[i]*1 <= (3*104)) || ops[i] == '+' || 
    ops[i] == 'C' || ops[i] == 'D'))
    {
      checks = false;
    }
  }
  
  // check if '+' contraint is met
  for (var i = 0; i < ops.length; i++) {
    if((ops[i] == '+') && (i <= 1))
    {
    console.log('constraints 3')
      checks = false;
    }
  }
  
  // check if 'C', 'D' contraint is meet
  for (var i = 0; i < ops.length; i++) {
    if((ops[i] == 'C' || ops[i] == 'D') && (i < 1))
    {
      checks = false;
    }
  }
  
  if(checks) {
    output[0] = parseInt(ops[0]);
    
    for (var i = 1; i < ops.length; i++) {
      // if score is a number
      if(ops[i] !== 'D' && ops[i] !== 'C' && ops[i] !== '+')
      {
        // add score to output
        output.push(parseInt(ops[i]));
      }
      
      if(ops[i] == 'C')
      {
        // remove the previous score
        output.splice(output.length - 1, 1);
        
      }
      
      if(ops[i] == 'D')
      {
        // add double the previous score 
        output.push(parseInt(output[output.length - 1]*2));
        
      }
      
      if(ops[i] == '+')
      {
        // add the sum of the two previous score
        output.push(output[output.length -1] + output[output.length - 2]);
        
        
      }
      
      
      
    }
  
  }
  
  var sum = function(arr) {
    var s = 0;
    for (var i = 0; i < arr.length; i++) {
      s+= arr[i];
    }
    
    return s;
  }
  
  
  return sum(output);
}

 

var ops = '5 2 C D +'.split(" ")
console.log(calPoints(ops))