lof_cancel.js

function LoFCancel(nestedArray) {

    console.log("WTF");

    // Helper function to flatten and find all bracket pairs
    function findBracketPairs(arr, parentIndex = []) {
        let pairs = [];
        for (let i = 0; i < arr.length; i++) {
            if (Array.isArray(arr[i])) {
                let currentIndex = parentIndex.concat(i);
                if (arr[i].length === 1 && Array.isArray(arr[i][0]) && arr[i][0].length === 0) {
                    pairs.push(currentIndex);
                }
                pairs = pairs.concat(findBracketPairs(arr[i], currentIndex));
            }
        }
        return pairs;
    }

    // Helper function to remove the selected pair of brackets
    function removeAtPath(arr, path) {
        if (path.length === 1) {
            arr.splice(path[0], 1);
        } else {
            removeAtPath(arr[path[0]], path.slice(1));
        }
    }

    // Find all bracket pairs
    let bracketPairs = findBracketPairs(nestedArray);

    if (bracketPairs.length === 0) {
        return nestedArray;
    }

    // Select a random pair to remove
    let randomPair = bracketPairs[Math.floor(Math.random() * bracketPairs.length)];

    // Remove the selected pair of brackets
    removeAtPath(nestedArray, randomPair);

    return nestedArray;
}

// Test cases
{
let testCase1 = [[[]]];
let testCase2 = [[[]], [[]]];
let testCase3 = [[[], []], []];
let testCase4 = [[], [[]]];
let testCase5 = [[[[[]]]]];
let testCase6 = [[[[[]]]],[[[[], [[[[]]]]]]]];

console.log(JSON.stringify(LoFCancel(testCase1))); // Output: []
console.log(JSON.stringify(LoFCancel(testCase2))); // Output: [[[]]]
console.log(JSON.stringify(LoFCancel(testCase3))); // Output: [[[]], []]
console.log(JSON.stringify(LoFCancel(testCase4))); // Output: [[]]
console.log(JSON.stringify(LoFCancel(testCase5))); // Output: [[[[]]]]
console.log(JSON.stringify(LoFCancel(testCase6))); // Output: [[[[]]]]
console.log(JSON.stringify(LoFCancel(testCase6))); // Output: [[[[]]]]
}