String comparison in Java - Interactive Code Practice

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Practice - 5 Tasks

1fill in blank

easy

Complete the code to compare two strings for equality.

Java

String a = "hello";
String b = "hello";
boolean result = a.[1](b);

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AequalsIgnoreCase

B==

CcompareTo

Dequals

Attempts:

3 left

2fill in blank

medium

Complete the code to compare two strings ignoring case differences.

Java

String a = "Hello";
String b = "hello";
boolean result = a.[1](b);

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AcompareTo

Bequals

CequalsIgnoreCase

DstartsWith

Attempts:

3 left

3fill in blank

hard

Fix the error in the code to correctly compare two strings.

Java

String a = "test";
String b = new String("test");
if (a.[1](b)) {
    System.out.println("Equal");
} else {
    System.out.println("Not equal");
}

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A==

Bequals

C!=

DcompareTo

Attempts:

3 left

4fill in blank

hard

Fill both blanks to create a map of strings to their lengths, but only include strings longer than 3 characters.

Java

Map<String, Integer> lengths = words.stream()
    .filter(word -> word.[1]() > 3)
    .collect(Collectors.toMap(word -> word, word -> word.[2]()));

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Alength

Blength()

Dsize()

Attempts:

3 left

5fill in blank

hard

Fill all three blanks to create a map of uppercase strings to their lengths, including only strings longer than 4 characters.

Java

Map<String, Integer> result = words.stream()
    .filter(word -> word.[1]() > 4)
    .collect(Collectors.toMap(word -> word.[2](), word -> word.[3]()));

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Alength()

BtoUpperCase()

DtoLowerCase()

Attempts:

3 left