{
    "ch-1" : [
        {
            "function" : "missingintegers",
            "arguments" : [ 1, 2, 1, 3, 2, 5 ],
            "result" : [ 4, 6 ]
        },
        {
            "arguments" : [ 1, 1, 1 ],
            "result" : [ 2, 3 ]
        },
        {
            "arguments" : [ 2, 2, 1 ],
            "result" : [ 3 ]
        },
        {
            "arguments" : [ 2, 1 ],
            "result" : [ ]
        }
    ],
    "ch-2" : [
        {
            "function" : "mad",
            "arguments" : [ 4, 1, 2, 3 ],
            "result" : [ [1,2], [2,3], [3,4] ]
        },
        {
            "arguments" : [ 1, 3, 7, 11, 15 ],
            "result" : [ [ 1, 3 ] ]
        },
        {
            "arguments" : [ 1, 5, 3, 8 ],
            "result" : [ [1,3], [3,5] ]
        }
    ]
}