Added 2 colors to track left and right pointers for better visualization

Author: mallikarjun2000

public/sorting/js/quick_sort.js

@@ -81,6 +81,7 @@ function quicksort(divs,height, l, r){
 }
 
 export function quick(divs, height) {
- delay_time=30000/(Math.floor(n/30)*speed); 
+ delay_time=30000/(Math.floor(n/30)*speed);
+ 
  quicksort(divs,height,0,height.length-1);
 }