lof_compensate.js

function LofCompensate(nestedArray) {
    // Helper function to generate a random integer between min and max (inclusive)
    function getRandomInt(min, max) {
        return Math.floor(Math.random() * (max - min + 1)) + min;
    }

    // Helper function to insert a new [[]] structure at a random position within the array
    function insertDoubleBracketAtRandomPosition(arr) {
        let newElement = [[]];
        let position = getRandomInt(0, arr.length);

        if (arr.length === 0) {
            arr.push(newElement);
        } else {
            arr.splice(position, 0, newElement);
        }
    }

    // Helper function to recursively traverse the array and insert the new structure
    function addAtRandomLocation(arr) {
        if (arr.length === 0) {
            insertDoubleBracketAtRandomPosition(arr);
        } else {
            let randomIndex = getRandomInt(0, arr.length);
            if (Math.random() < 0.5 || !Array.isArray(arr[randomIndex])) {
                insertDoubleBracketAtRandomPosition(arr);
            } else {
                addAtRandomLocation(arr[randomIndex]);
            }
        }
    }

    // Clone the original array to avoid modifying the input array directly
    let clonedArray = JSON.parse(JSON.stringify(nestedArray));
    addAtRandomLocation(clonedArray);
    return clonedArray;
}

{
// Test cases
let testCase1 = [];
let testCase2 = [[],[],[[[[]]],[[[]]]]];
let testCase3 = [[],[],[[[[]]],[[[]]]]];

console.log(JSON.stringify(LofCompensate(testCase1))); // Output: [[[]]]
console.log(JSON.stringify(LofCompensate(testCase2))); // Possible outputs: [[[[]]],[],[[[[]]],[[[]]]]], [[],[[[],[[[[]]],[[[]]]]]]], etc.
console.log(JSON.stringify(LofCompensate(testCase3))); // Possible outputs: [[[[]]],[],[[[[]]],[[[]]]]], [[],[[[],[[[[]]],[[[]]]]]]], etc.
console.log(JSON.stringify(LofCompensate(testCase3))); // Possible outputs: [[[[]]],[],[[[[]]],[[[]]]]], [[],[[[],[[[[]]],[[[]]]]]]], etc.
}