// Program to test solutions to problem #5 on the cse143 midterm, autumn 2017.
// Fill in your solution to insertAt, then compile and run the program
// note: this program doesn't test the exception that should be thrown

import java.util.*;

class ArrayIntList {
    public void insertAt(int index, int n, int value) {
        // fill in your solution here
        // you can also rename the parameters above
    }

    public void insertAt2(int index, int n, int value) {
        if (index < 0 || index > size || n < 0) {
            throw new IllegalArgumentException();
        }
        for (int i = size - 1; i >= index; i--) {
            elementData[i + n] = elementData[i];
        }
        for (int i = 0; i < n; i++) {
            elementData[i + index] = value;
        }
        size += n;
    }

    private int[] elementData; // list of integers
    private int size;          // current number of elements in the list

    public static final int DEFAULT_CAPACITY = 100;

    // post: constructs an empty list of default capacity
    public ArrayIntList() {
        elementData = new int[DEFAULT_CAPACITY];
        size = 0;
    }

    // post: creates a comma-separated, bracketed version of the list
    public String toString() {
        if (size == 0) {
            return "[]";
        } else {
            String result = "[" + elementData[0];
            for (int i = 1; i < size; i++) {
                result += ", " + elementData[i];
            }
            result += "]";
            return result;
        }
    }

    // post: appends the given value to the end of the list
    public void add(int value) {
        elementData[size] = value;
        size++;
    }
}

public class Test5 {
    private static int count, failCount;

    public static void main(String[] args) {
        for (int i = 0; i <= 10; i++) {
            test(new int[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, i);
        }
        test(new int[] {}, 0);

        if (failCount == 0) {
            System.out.println("passed all tests");
        } else {
            System.out.println("failed " + failCount + " of " + count +
                               " tests");
        }
    }

    public static void test(int[] data, int index) {
        ArrayIntList list1 = new ArrayIntList();
        ArrayIntList list2 = new ArrayIntList();
        for (int n : data) {
            list1.add(n);
            list2.add(n);
        }
        System.out.println("initial list = " + list1);
        for (int i = 0; i <= 3; i++) {
            int value = 100 + i;
            System.out.println("inserting " + i + " of " + value + " at " + 
                               index);
            list1.insertAt2(index, i, value);
            System.out.println("new list = " + list1);
            boolean fail = false;
            try {
                list2.insertAt(index, i, value);
                System.out.println("yours    = " + list2);
                if (!list1.toString().equals(list2.toString())) {
                    fail = true;
                }
            } catch (RuntimeException e) {
                int line = e.getStackTrace()[0].getLineNumber();
                System.out.println("    threw " + e  + " at line #" + line);
                fail = true;
            }
            count++;
            if (fail) {
                System.out.println("failed");
                failCount++;
            } else {
                System.out.println("passed");
            }
        }
        System.out.println();
    }
}