// Program to test solutions to problem #8 on the cse142 midterm, spring 2015.
// Fill in your solution to digitsInARow, then compile and run the program.

import java.util.*;

public class Test8 {
    public static int digitsInARow(int n) {
        // fill in your solution here
        // you can also rename the parameter above
    }

    // this is the sample solution
    public static int digitsInARow2(int n) {
        int max = 1;
        int count = 1;
        while (n > 0) {
            int next = n % 10;
            n = n / 10;
            if (n % 10 == next) {
                count++;
            } else {
                count = 1;
            }
            if (count > max) {
                max = count;
            }
        }
        return max;
    }

    private static int testCount, failCount;

    public static final int ERRORS_MAX = 15;

    public static void main(String[] args) {
        failCount = 0;
        for (int i = 0; i < 1000000; i++) {
            test(i);
        }

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

    public static void test(int n) {
        testCount++;
	int n2 = digitsInARow2(n);
	int n1 = 0;
        boolean fail = false;
        RuntimeException except = null;
	try {
	    n1 = digitsInARow(n);
        } catch (RuntimeException e) {
            fail = true;
            except = e;
        }
        fail = fail || n1 != n2;
        if (fail) {
            System.out.println("testing digitsInARow(" + n + ")");
            if (except != null) {
                StackTraceElement[] trace = except.getStackTrace();
                int line = trace[0].getLineNumber();
                System.out.println("Threw exception at line#" + line);
            } else {
                System.out.println("correct: " + n2);
                System.out.println("yours  : " + n1);
            }
            System.out.println();
            failCount++;
            if (failCount > ERRORS_MAX) {
                System.out.println("exceeds " + ERRORS_MAX + " errors");
                System.out.println("with " + (testCount - failCount) +
                                   " correct");
                System.exit(0);
            }
        }
    }
}