Potential Gain

swagger ui

swagger

get-all-possible

We can earn the same gain by buying and selling on different days. That's why we'll use it to list all possible wins. This will be return a list.

find-max

the one with the maximum gain returns. (there may be more than one with the same earnings).

response explanation

{
  "buyRate": {
    "day": 11,
    "buyExchangeRate": 132,
    "sellExchangeRate": 136  // using this rate to buy foreign amount day 11
  },
  "sellRate": {
    "day": 13,
    "buyExchangeRate": 142,  // using this rate to exchange from foreign amount to local amount day 13
    "sellExchangeRate": 144
  },
  "gain": 44.11764705882378
}

In the above result, if we buy on the 11th day and sell on the 13th day, we will gain 44.11764705882378.

There is more than one path with the same highest rate.

[
  {
    "buyRate": {
      "day": 2,
      "buyExchangeRate": 132,
      "sellExchangeRate": 136
    },
    "sellRate": {
      "day": 13,
      "buyExchangeRate": 142,
      "sellExchangeRate": 144
    },
    "gain": 44.11764705882378
  },
  {
    "buyRate": {
      "day": 5,
      "buyExchangeRate": 132,
      "sellExchangeRate": 136
    },
    "sellRate": {
      "day": 13,
      "buyExchangeRate": 142,
      "sellExchangeRate": 144
    },
    "gain": 44.11764705882378
  },
  {
    "buyRate": {
      "day": 8,
      "buyExchangeRate": 132,
      "sellExchangeRate": 136
    },
    "sellRate": {
      "day": 13,
      "buyExchangeRate": 142,
      "sellExchangeRate": 144
    },
    "gain": 44.11764705882378
  },
  {
    "buyRate": {
      "day": 11,
      "buyExchangeRate": 132,
      "sellExchangeRate": 136
    },
    "sellRate": {
      "day": 13,
      "buyExchangeRate": 142,
      "sellExchangeRate": 144
    },
    "gain": 44.11764705882378
  }
]