Master Java Substrings or Make a Common Mistake! 🎯

Test your Java skills with this tricky substring puzzle! Can you predict the output? Let's analyze it step by step and improve your coding mastery. πŸš€ #Java #CodingChallenge

Master Java Substrings or Make a Common Mistake! 🎯
Wiingy AP Computer Science
939 views β€’ Mar 17, 2025
Master Java Substrings or Make a Common Mistake! 🎯

About this video

πŸ“’ Description:
Can you predict the output of this Java substring puzzle? Let's break it down step by step! πŸš€
#Java #CodingChallenge

πŸ”’ Question:
What will be printed by the following Java code?

java
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String s = "Computer Science is fun!";
String s1 = s.substring(0,8);
String s2 = s1.substring(1);
String s3 = s2.substring(1,3);
System.out.println(s3);
(A) mput
(B) mpu
(C) mp βœ…
(D) omp

Quick Breakdown:
1️⃣ Extracting s1:

java
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s1 = s.substring(0,8);
This gives "Computer" (characters from index 0 to 7).

2️⃣ Extracting s2:

java
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s2 = s1.substring(1);
Removes the first character 'C', leaving "omputer".

3️⃣ Extracting s3:

java
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s3 = s2.substring(1,3);
Takes characters from index 1 to 3 in "omputer", which is "mp".

🎯 Final Answer: Option C!

πŸš€ Key Takeaways:
βœ” substring(start, end) extracts characters from start index to end index - 1.
βœ” Java strings are zero-based, so counting starts from index 0.
βœ” Understanding how substring() works is crucial for coding interviews & exams!

πŸ“Œ Got it? Comment below & don’t forget to like & subscribe for more coding tricks! 🎯πŸ”₯
#JavaCoding #Programming #Substring #InterviewQuestions πŸš€

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Video Information

Views

939

Likes

25

Duration

0:18

Published

Mar 17, 2025

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