Topic 4.3 Video 1

Match each of the following:

• Allows us to repeat a task multiple time

• .length method

• returns the number of characters

• for loop

• Returns 0 if the strings are equal

• .compareTo method

• Returns true if two strings are the same

• .equals method

• returns a portion of a string

• substring method

Why did an index out of bounds exception occur?

• The index out of bounds exception occurred because the program ran out of memory.
• The index out of bounds exception occurred because the program encountered a syntax error.
• The index out of bounds exception occurred because the program tried to access a letter using an index that is outside the length of the string.

• The index out of bounds exception occurred because the program was not properly compiled.

What was done to debug the index out of bounds error and obtain the correct output?

• Adjust the condition of the for loop to stop at the position that is equal to length of word - length of sub

• Ignore the error and hope it goes away on its own
• Adjust the condition of the for loop to stop at the position that is less than the length of word - length of sub

• Adjust the condition of the for loop to stop at the position that is less than or equal to length of word - length of sub

What is printed as a result of the following code segment?

for (int k = 0; k < 20; k+=2)

{

if (k % 3 == 1)

System.out.println(k + " ");

}

• 0 2 4 6 8 10 12 14 16 18

• 4 16

• 0 6 12 18

• 1 4 7 10 13 16 19

• 4 10 16

What are the values of var1 and var2 after the following code segment is executed and the while loop finishes?

int var1 = 0; int var2 = 2;

while ((var2 != 0) && ((var1 / var2) >= 0))

{

var1 = var1 + 1;

var2 = var2 - 1;

}

• var1 = 0, var2 = 2

• var1 = 1, var2 = 1

• var1 = 3, var2 = -1

• var1 = 2, var2 = 0

• The loop won't finish executing because of a division by zero.
  

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