Solution to
Try It Yourself: loops

  1.  
    1. Loops 1, 2, 5, 6
    2. Loops 3, 4
    3. Loops 3, 4, 6
    4. Loop 4
    5. Loops 1, 2, 4, 6
    6. Loops 3, 5


  2.  
    one
two
two
zero
three


  3.  
    int input;
do {
  input = Integer.parseInt(stdin.nextLine());
} while ((input % 4 != 0) && (input % 7 != 0));


  4.  
    // first print the top row
for (int i = 0; i < col; i++)
    System.out.print("*");
System.out.println();
   
// print the middle
for (int r = 1; r < row - 1; r++) {
    System.out.print("*");
    for (int c = 1; c < col - 1; c++)
        System.out.print(" ");
    System.out.println("*");
}

// print the last row
for (int i = 0; i < col; i++)
    System.out.print("*");
System.out.println();


  5.   
    public static int countLower(String str) {
    int count = 0;
    for (int i = 0; i < str.length(); i++) {
        char ch = str.charAt(i);
        if ('a' <= ch && ch <= 'z')
            count++;
    }
    return count;
}