8000 Update README.md · 2714rohit/Java-Coding-Problems@58cfeb0 · GitHub
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README.md

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@@ -7,7 +7,7 @@ This is the code repository for [Java Coding Problems ](https://www.packtpub.com
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**Improve your Java Programming skills by solving real-world coding challenges**
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## What is this book about?
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* Adopt the latest JDK 11 and JDK 12 features in your applications
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* Adopt the latest JDK 8 - JDK 13 features in your applications
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* Solve cutting-edge problems relating to collections and data structures
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* Get to grips with functional-style programming using lambdas
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* Perform asynchronous communication and parallel data processing
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The code will look like the following:
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```
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public Map<Character, Integer> countDuplicateCharacters(String str) {
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Map<Character, Integer> result = new HashMap<>();
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// or use for(char ch: str.toCharArray()) { ... }
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for (int i = 0; i<str.length(); i++) {
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char ch = str.charAt(i);
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result.compute(ch, (k, v) -> (v == null) ? 1 : ++v);
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}
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return result;
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Map<Character, Integer> result = new HashMap<>();
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// or use for(char ch: str.toCharArray()) { ... }
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for (int i = 0; i<str.length(); i++) {
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char ch = str.charAt(i);
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result.compute(ch, (k, v) -> (v == null) ? 1 : ++v);
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}
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return result;
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}
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```
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