Master Java Substrings or Fall for This Classic Mistake! 🎯⚠️
📢 Description: Can you predict the output of this Java substring puzzle? Let's break it down step by step! 🚀 #Java #CodingChallenge 🔢 Question: What will...
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About this video
📢 Description:
Can you predict the output of this Java substring puzzle? Let's break it down step by step! 🚀
#Java #CodingChallenge
🔢 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 ✅
(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!
🚀 Key Takeaways:
✔ substring(start, end) extracts characters from start index to end index - 1.
✔ Java strings are zero-based, so counting starts from index 0.
✔ Understanding how substring() works is crucial for coding interviews & exams!
📌 Got it? Comment below & don’t forget to like & subscribe for more coding tricks! 🎯🔥
#JavaCoding #Programming #Substring #InterviewQuestions 🚀
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Published
Mar 17, 2025
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