Skip to content

Strings in Java :Java Programming: Solving Problems with Software (Java Programming and Software Engineering Fundamentals Specialization) Answers 2025

1. What is the video for the second YouTube link?

  • Potatoes ❌

  • STEM ❌

  • Turkeys, Ducks and Quails ✔️

  • Walt Disney cartoons ❌

Summary:
The second YouTube link on the webpage points to a video about Turkeys, Ducks and Quails.

2. What does the mystery method do?

  • First three T’s replaced with two T’s ❌

  • All T’s removed ❌

  • Each T replaced with two T’s ❌

  • Three copies of the string ❌

  • The first three T’s are removed ✔️

Summary:
The method finds the first 3 “T” characters and skips/removes them from the returned string.

3. How many genes are in this file?

✔️ 69

Summary:
The code finds 69 valid genes in the DNA file.

4. How many genes are longer than 60?

✔️ 23

Summary:
Out of 69 total genes, 23 have length > 60.

5. How many genes have cgRatio > 0.35?

✔️ 40

Summary:
40 genes have a CG ratio greater than 0.35.

6. How many times does the codon CTG appear?

✔️ 224

Summary:
The codon “CTG” occurs 224 times in the entire DNA strand.

7. What is the length of the longest gene?

✔️ 489

✅ Summary Table

Question Final Answer Summary
1. Second YouTube video topic ✔️ Turkeys, Ducks and Quails The second YouTube link points to a video about Turkeys, Ducks and Quails.
2. What does the mystery method do? ✔️ Removes first three T’s The method finds and removes the first 3 occurrences of “T” in the string.
3. Total genes in file ✔️ 69 69 genes are detected from the DNA sequence.
4. Genes longer than 60 ✔️ 23 23 of the 69 genes have length greater than 60.
5. Genes with cgRatio > 0.35 ✔️ 40 40 genes have a CG ratio above 0.35.
6. CTG codon count ✔️ 224 The codon CTG appears 224 times in the DNA strand.
7. Longest gene length ✔️ 489 The longest gene found is 489 bases long.