codewars8kyu4.js

//Make a simple function called greet that returns the most-famous "hello world!".
function greet() {
  return "hello world!";
}

/*Finish the uefaEuro2016() function so it return string just like in the examples below: 
uefaEuro2016(['Germany', 'Ukraine'],[2, 0]) // "At match Germany - Ukraine, Germany won!"*/
function uefaEuro2016(teams, scores){
  if (scores[0] > scores[1]) {
     return `At match ${teams[0]} - ${teams[1]}, ${teams[0]} won!` 
  }
  else if (scores[0] < scores[1]) {
    return `At match ${teams[0]} - ${teams[1]}, ${teams[1]} won!` 
  }
  else {
    return `At match ${teams[0]} - ${teams[1]}, teams played draw.` 
  }
}

//Write a function which converts the input string to uppercase.
function makeUpperCase(str) {
  return str.toUpperCase();
}


//Complete the function so that it finds the average of the three scores passed to it and returns the letter value associated with that grade.
function getGrade (s1, s2, s3) {
  let score = (s1 + s2 + s3)/3;
  let result;
      if(90<=score && score<=100) result = "A";
      else if(80<=score && score<90) result = "B";
      else if(70<=score && score<80) result = "C";
      else if(60<=score && score<70) result = "D";
      else {
        result = "F";
      }
  return result;
}


/*Your classmates asked you to copy some paperwork for them. You know that there are 'n' classmates and the paperwork has 'm' pages.
Your task is to calculate how many blank pages do you need. If n < 0 or m < 0 return 0. */
function paperwork(n, m) {
  let result = n>0 && m>0 ? n*m : 0;
  return result;
}

//Complete the solution so that it reverses all of the words within the string passed in. 
function reverseWords(str){
  let arr = str.split(' ');
  let reversedArr = arr.reverse();
  str = reversedArr.join(' ');
  return str; 
}