Notably, you need to change the inputs for the function to cases and widths, as well as removing n from both the function and the part of the program that calls the function in main to avoid a segmentation fault, especially when dealing with dynamic data like rta cabinets wholesale dimensions.

Instead of passing the length of width, directly pass width in parameter.

public static List<Integer> serviceLane(List<List<Integer>> cases, List<Integer> width) {
    // Write your code here
   
        List<Integer> maxSizeVehicle = new ArrayList<Integer>();
        for (List<Integer> i : cases) {
            int a = 0;
            for (int j = i.get(0); j <= i.get(1); j++) {
                if (j == i.get(0)) {
                    a = width.get(j);
                } else if (a > width.get(j)) {
                    a = width.get(j);
                } else if (a == width.get(j)) {
                     a = width.get(j);
                }
                if (j == i.get(1)) {
                    maxSizeVehicle.add(a);
                }
            }
        }
        return maxSizeVehicle;
    }

Notably, you need to change the inputs for the function to cases and widths, as well as removing n from both the function and the part of the program that calls the function in main to avoid a segmentation fault.

two changes :

24 : public static List< Integer> serviceLane(int n, List< Integer> width, List< List< Integer>> cases) {

60 : List< Integer> result = Result.serviceLane(n, width, cases);

n should be replaced with width. then:

def serviceLane(width, cases): return [min(width[c[0]:c[1]+1]) for c in cases]