Sorting-Visualizer/quickSort.js at main · NembotJules/Sorting-Visualizer · GitHub

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async function partitionLomuto(ele, l, r){
    let i = l - 1;

    ele[r].style.background = 'red';
    for(let j = l; j <= r - 1; j++){
        ele[j].style.background = 'yellow';

        await sleep(delay);

        if(parseInt(ele[j].style.height) < parseInt(ele[r].style.height)){
            console.log('In partitionLomuto for j if');
            i++;
            swapElements(ele[i], ele[j]);

            ele[i].style.background = 'orange';
            if(i != j) ele[j].style.background = 'orange';

            await sleep(delay);
        }
        else{

            ele[j].style.background = 'pink';
        }
    }
    i++;

    await sleep(delay);
    swapElements(ele[i], ele[r]);
    console.log(`i = ${i}`, typeof(i));

    ele[r].style.background = 'pink';
    ele[i].style.background = 'green';

    await sleep(delay);

    for(let k = 0; k < ele.length; k++){
        if(ele[k].style.background != 'green')
            ele[k].style.background = 'cyan';
    }

    return i;
}

async function quickSort(ele, l, r){
    console.log('In quickSort()', `l=${l} r=${r}`, typeof(l), typeof(r));
    if(l < r){
        let pivot_index = await partitionLomuto(ele, l, r);
        await quickSort(ele, l, pivot_index - 1);
        await quickSort(ele, pivot_index + 1, r);
    }
    else{
        if(l >= 0 && r >= 0 && l <ele.length && r <ele.length){
            ele[r].style.background = 'green';
            ele[l].style.background = 'green';
        }
    }
}


const quickSortbtn = document.querySelector(".quickSort");
quickSortbtn.addEventListener('click', async function(){
    let ele = document.querySelectorAll('.bar');
    let l = 0;
    let r = ele.length - 1;
    disableBtn()
    disableSlideInputs()
    await quickSort(ele, l, r);
        algoInfo.innerHTML = `<p>Quick Sort: </p>
                              <p> Space Complexity: O(logn) </p>
                              <p> Time Complexity:  O(nlogn) on average... </p>`
    enableBtn();
    enableSlideInputs();
});