9.10.1. Arrays-WE8-P1

Subgoals for Evaluating Arrays

1. Set up array from 0 to size-1

2. Evaluate data type of statements against array

3. Trace statements, updating slots as you go

   1. Remember assignment subgoals

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Arrays-WE8-P1

Q45: What are the contents of array alpha after this code has been executed?

int [] alpha = {10, 20, 30, 40, 50, 60, 70};
int start = alpha[alpha.length-1];
for (int i = 1; i < alpha.length; i++)  {
   alpha[i] = alpha[i-1];
}
alpha[0] = start;

• {20, 30, 40, 50, 60, 70, 70}
• {20, 30, 40, 50, 60, 70, 10}
• {10, 20, 30, 40, 50, 60, 70}
• {10, 10, 20, 30, 40, 50, 60}
• {70, 10, 10, 10, 10, 10, 10}

Q46: What are the contents of array beta after this code has been executed?

int [] beta = {10, 20, 30, 40, 50, 60, 70};
for (int i = 1; i < beta.length; i++)  {
   beta[i] = beta[i-1])
}

• {20, 30, 40, 50, 60, 70, 70}
• {20, 30, 40, 50, 60, 70, 10}
• {10, 20, 30, 40, 50, 60, 70}
• {10, 10, 20, 30, 40, 50, 60}
• {70, 10, 20, 30, 40, 50, 60}

Q47: What are the contents of array gamma after this code has been executed?

int [] gamma = {10, 20, 30, 40, 50, 60, 70};
for (int i = 0; i < gamma.length; i++)  {
   gamma[i] = gamma[i+1])
}

• {20, 30, 40, 50, 60, 70, 70}
• {20, 30, 40, 50, 60, 70, 10}
• {10, 20, 30, 40, 50, 60, 70}
• {10, 10, 20, 30, 40, 50, 60}
• IndexOutOfBounds Exception

public class main{ public static void main(String args[]){ } }

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