get_max_profit_unique_vals.js

function getMaxProfit(array) {
  let profit = 0;
  for (let i = 0; i < array.length; i++) {
    let max = array[i]
    for (let j = i + 1; j < array.length; j++) {
      if (max < array[j]) max = array[j]
    }
    profit += max - array[i]
  }
  return profit
}

// console.log(getMaxProfit([1, 2, 3, 4, 5, 6]))//        => 15  (Since we are allowed to buy everyday one stock we will buy at price 1, 2, 3, 4, 5 and since we can sell all the stocks at once so we will sell when the value becomes 6. So the total profit will be (6 - 1) + (6 - 2) + (6 - 3) + (6 - 4) + (6 - 5) i.e 15
// console.log(getMaxProfit([6, 5, 4, 3, 2, 1]))//        => 0   (nothing to buy as we will not be able to make profit)
// console.log(getMaxProfit([1, 6, 5, 10, 8, 7]))//       => 18  (buy at 1,6,5 and sell all at 10)
// console.log(getMaxProfit([1, 2, 10, 3, 2, 7, 3, 2]))// => 26  (buy at 1,2 and sell them at 10. Then buy at 3,2 and sell them at 7)

function uniqueVals(object) {
  const charMap = {};
  for (let key of Object.keys(object).reverse()) {
    for (let i = 0; i < object[key].length; i++) {
      if (charMap[object[key][i]]) {
        object[key].splice(i, 1)
        i--
      }
      else
        charMap[object[key][i]] = 1
    }
  }
  return object
}

console.log(uniqueVals({
  "1": ["A", "B", "C"],
  "2": ["A", "B", "D", "A"],
}))
console.log(uniqueVals({
  "1": ["C", "F", "G"],
  "2": ["A", "B", "C"],
  "3": ["A", "B", "D"],
}))