What is GDP of the company? What are the latest features of Java 8? Write Java code snippet to count number of 1s, 2s, 3s in an array [1,2,2,3,3,4,4,1,2,3] Write functional programming code to iterate over a list and retrieve its values.

Question

Accepted Answer

Interview questions for Software Engineer position

GDP is not relevant to the Software Engineer position
Java 8 features include lambda expressions, streams, and default methods
Java code snippet: use a HashMap to count occurrences of each number
Functional programming code: use forEach or map method to iterate over list

Accepted Answer

Java Approach: HashMap countingMap= new HashMap(); for(int num:list) { if(countingMap.containsKey(num)) { countingMap.put(num, countingMap.get(num)+1); }else { countingMap.put(num, 1); } } Stream API: List<Integer> list=Arrays.asList(1,2,2,3,3,4,4,1,2,3); list.stream().collect(Collectors.groupingBy(Function.identity(),Collectors.counting()))

Asked in Fidelity Investments

What is GDP of the company? What are the latest features of Java 8? Write Java code snippet to count number of 1s, 2s, 3s in an array [1,2,2,3,3,4,4,1,2,3] Write functional programming code to iterate over a list and retrieve its values.

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