int main(int argc, const char * argv[]) {
    double f[5] = {2.5, -1.9, 6.1, 10.2, -7.7};
    double t[5] = {5.1, 4.5, 1.6, 2.9, 19.1};
    double o[1] = {-2.3};
    double a1[7] = {10, 50, 40, 20, 50, 40, 30};
    double a2[3] = {50, 20, 30};
    double a3[3] = {50, 40, 40};
    double a4[3] = {50, 30, 20};
    double a5[3] = {10, 20, 20};
    assert(!allTrue(f, 5));
    assert(allTrue(t, 5));
    assert(allTrue(f, -1));
    assert(allTrue(t,0));
    assert(countFalse(f,5)==2);
    assert(countFalse(t, 5)==0);
    assert(countFalse(o, 1)==1);
    assert(countFalse(o, -1)==0);
    assert(firstFalse(o, 1)==0);
    assert(firstFalse(f, 5)==1);
    assert(firstFalse(t, 5)==-1);
    assert(indexOfMin(f, 5)==4);
    assert(indexOfMin(t, 5)==2);
    assert(indexOfMin(o, 1)==0);
    assert(indexOfMin(o, -1)==-1);
    assert(indexOfMin(f, 0)==-1);
    assert(includes(a1, 7, a2, 3));
    assert(includes(a1, 7, a3, 3));
    assert(!includes(a1, 7, a4, 3));
    assert(!includes(a1, 7, a5, 3));
    assert(includes(a1, 7, a2, 0));
    assert(!includes(a1, 0, a2, 3));
 cout << "Passed all test cases." << endl;
}