💡 Java Interview / Coding Question: 👉 How do you find the factorial of a number using Java Stream API? Here’s the modern Java solution 👇 int n = 5; long fact = IntStream.rangeClosed(1, n) .reduce(1, (a, b) -> a * b); 🎯 Explanation: - rangeClosed(1, n) → creates a stream from 1 to n - reduce() → multiplies all numbers - Initial value 1 → factorial base ✔️ Clean logic ✔️ Uses functional programming ✔️ Frequently asked in Java interviews 👉 Save this post for your Java interview prep 👉 Follow
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💡 Java Interview / Coding Question: 👉 How do you find the factorial of a …
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💡 Java Interview / Coding Question: 👉 How do you find the length of the longest word in a sentence using Java Stream API? Here’s the clean & modern Java solution 👇 String sentence = "Java Stream API makes coding powerful"; int maxLength = Arrays.stream(sentence.split(" ")) .mapToInt(String::length) .max() .orElse(0); 🎯 Explanation: - split(" ") → splits sentence into words - stream() → converts words into a stream - mapToInt(String::length) → converts words to their lengths - max() → finds t
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💡 Java Interview / Coding Question: 👉 How do you find the missing number in an array using Java Stream API? Assume the array contains numbers from 1 to N with one number missing 👇 int n = arr.length 1; int expectedSum = IntStream.rangeClosed(1, n).sum(); int actualSum = Arrays.stream(arr).sum(); int missing = expectedSum - actualSum; 🎯 Explanation: - rangeClosed(1, n) → creates stream from 1 to N - expectedSum → sum of all numbers - actualSum → sum of given array - missing = expectedSum - ac
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