AssesmentMC.js

function solution(A) {
    let indexA = A.map((height, index) => ({ height, index }));
    indexA.sort((x, y) => y.height - x.height);
    let result = new Array(A.length);

    let height = A.length;

    for (let i = 0; i < indexA.length; i++) {
        result[i] = Math.min(height, indexA[i].height);
        height--;
    }

    return result;
}

console.log(solution([1, 2, 3]));
console.log(solution([9, 4, 3, 7, 7]));
console.log(solution([2, 5, 4, 5, 5]));


function solution(A) {
    let indexA = A.map((height, index) => ({ height, index }));
    indexA.sort((x, y) => y.height - x.height);
    let B = new Array(A.length);

    let heights = new Set();

    for (let i = 0; i < indexA.length; i++) {
        let maxHeight = indexA[i].height;
        let assingHeight = maxHeight;

        while (heights.has(assingHeight)) {
            assingHeight++;
        }

        B[indexA[i].index] = assingHeight;
        heights.add(assingHeight);
    }

    return B;
}