sorteador.com.br

{
  "type": "object",
  "required": [
    "quantity",
    "from",
    "to"
  ],
  "properties": {
    "quantity": {
      "type": "integer",
      "minimum": 1,
      "maximum": 99999,
      "description": "How many numbers to draw."
    },
    "from": {
      "type": "integer",
      "minimum": 0,
      "description": "Range start, inclusive."
    },
    "to": {
      "type": "integer",
      "description": "Range end, inclusive. Must be >= from."
    },
    "dontRepeat": {
      "type": "array",
      "items": {
        "type": "integer"
      },
      "description": "Numbers to exclude from the range."
    },
    "allowRepetition": {
      "type": "boolean",
      "description": "Draw with replacement, so the same number can come out more than once. Default false."
    }
  }
}