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content/ta/fall2017/cpsc220/exam2review.md

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+# Exam Review Partial Answer Sheet
+
+Write a Java method to sum values of an array
+
+```java
+// Assume variable numbers is an array of 10 integers
+int sum = 0;
+for (int i = 0; i < numbers.length; i++) {
+    sum += numbers[i];
+}
+```
+
+Write a Java method to test if an array contains a specific value
+
+```java
+// Assume variable numbers is an array of 10 integers
+int numWanted = 4;
+boolean found = false;
+for (int i = 0; i < numbers.length; i++) {
+    if (numbers[i] == numWanted) {
+      System.out.println("The number " + numWanted + " was found!");
+      found = true;
+    }
+}
+if (!found) {
+    System.out.println("The number " + numWanted + " was not found!");
+}
+```
+
+Write a Java method to find the index of an array element
+
+```java
+// Assume variable numbers is an array of 10 integers
+int numWanted = 4;
+boolean found = false;
+for (int i = 0; i < numbers.length; i++) {
+    if (numbers[i] == numWanted) {
+      System.out.println("The index of number " + numWanted + " is " + i);
+    }
+}
+```
+
+How many lines will the following loop print when it is run?
+
+```java
+int i = 0;
+while (i <= 6) {
+  System.out.println("i is now " + (i));
+  i++;
+}
+```
+
+```
+i is now 0
+i is now 1
+i is now 2
+i is now 3
+i is now 4
+i is now 5
+i is now 6
+```
+