function checkNumbers(array){
  var counter = 1;
  var a = []

  for(var i = 1; i <= array.length; i++){
    if(array[i] != array[i-1]){
      a.push("Number: " + [array[i-1], " Count: " + counter])
      counter = 1;
    } else {
      counter++;
    }
  }
  return a ;
}

console.log("Function 1 :")
console.log(checkNumbers([2,1,1,1,2,2,3,3,3,1,1,5,3,3,1,2,77,6]))


function checkNumbersUnique(array){
  var counter = 1;
  var a = [];
  var b = {};

  for(var i = 1 ; i <= array.length; i++){
    if(array[i] != array[i-1]){
      if(b[array[i-1]]){
        b[array[i-1]] += counter
      } else {
        b[array[i-1]] = counter
      }
      counter = 1
    } else {
      counter++;
    }
  }
  a.push(b)
  return a;
}

console.log("Function 2: ")
console.log(checkNumbersUnique([2,1,1,1,2,2,3,3,3,1,1,5,3,3,1,2,77,6]))