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Java Mini Review -> Function Solutions #4

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Java Mini Review -> Function Solutions #4

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d118c24
First changes and adjustments
kohumukini Apr 10, 2026
544e756
Fixed syntax error(s)
kohumukini Apr 10, 2026
1e84448
Added new test cases
kohumukini Apr 10, 2026
1d2b643
Added new edge cases & improved functions
kohumukini Apr 10, 2026
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38 changes: 33 additions & 5 deletions src/Practice.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,9 @@ public class Practice {
* @param items an array of strings to print
*/
public static void printItems(String[] items) {
// TODO: Implement this method here!
for (String item : items) {
System.out.println(item);
}
}

/**
Expand All @@ -44,8 +46,11 @@ public static void printItems(String[] items) {
* @return true if a is strictly more than twice the value of b, false otherwise
*/
public static boolean moreThanDouble(int a, int b) {
// TODO: Delete the dummy return statement and implement this method here!
return false;
if (b == 0) {
System.out.println(" --Undefined-- ");
return false;
}
return (double) a / b > 2;
}


Expand All @@ -70,8 +75,15 @@ public static boolean moreThanDouble(int a, int b) {
* @return true if every word starts with A (case-insensitive), false otherwise.
*/
public static boolean allStartWithA(String[] words) {
// TODO: Delete the dummy return statement and implement this method here!
return false;
for (String word : words)
{
word = word.strip().toLowerCase();
if (!word.startsWith("a")) {
return false;
}
}

return true;
}

public static void main(String[] args) {
Expand All @@ -95,5 +107,21 @@ public static void main(String[] args) {
System.out.println("allStartWithA(new String[]{\"apes\", \"can\", \"be\", \"amazing\"}): " + allStartWithA(new String[]{"apes", "can", "be", "amazing"}));
System.out.println("allStartWithA(new String[]{}): " + allStartWithA(new String[]{}));
System.out.println();

System.out.println("Calling printItems with String[]{{\"Hi\", \"There\\n\", \"maybe\", \"we\", \"if23 asd\"}");
printItems(new String[]{"Hi", "There\n", "maybe", "we", "if23 asd"});
System.out.println();

System.out.println("Calling moreThanDouble with values (3,2), (100,10), (60,29), (1,0), (0,1)");
System.out.println("moreThanDouble(3,2): " + moreThanDouble(3,2));
System.out.println("moreThanDouble(100,10): " + moreThanDouble(100,10));
System.out.println("moreThanDouble(60,29): " + moreThanDouble(60,29));
System.out.println("moreThanDouble(0,1): " + moreThanDouble(0,1));
System.out.println();
System.out.println("moreThanDouble(1,0): " + moreThanDouble(1,0));
System.out.println();

System.out.println();
System.out.println("allStartsWithA(new String[]{\" a\", \"almost\", \"anything\", \"\\nanyways\"}): " + allStartWithA(new String[]{" a", "almost", "anything", "\nanyways"}));
}
}