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Interview Questions and Answers - Order By Newest | ||||
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Ans. https://www.tutorialspoint.com/javaexamples/thread_procon.htm | ||||
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Like Discuss Correct / Improve  coding  code Asked in 1 Companies | ||||
Frequently asked in high end product companies. | ||||
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Ans. https://www.geeksforgeeks.org/lru-cache-implementation/ | ||||
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Like Discuss Correct / Improve  cache  LRU cache  coding  code Asked in 10 Companies intermediate | ||||
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Ans. It will print 4 because member elements of an interface are implicitly static and hence the concept of overriding doesn't work. | ||||
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Like Discuss Correct / Improve  interfaces  coding  code  extending interfaces  diamond interfaces Asked in 1 Companies intermediate | ||||
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Ans. 10 | ||||
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Like Discuss Correct / Improve  interfaces  coding  code intermediate | ||||
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Ans. public class Class{ public static void main(String[] args){ List<Integer> collector = new ArrayList(); Scanner scanner = new Scanner(System.in); int x = scanner.nextInt(); while(x != 0){ collector.add(x); x = scanner.nextInt(); } System.out.println(collector.stream().collect(Collectors.averagingInt(p->((Integer)p)))); } } | ||||
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Like Discuss Correct / Improve  coding  code  collector  streams  Collectors.average Asked in 1 Companies | ||||
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Ans. public class Class{ public static void main(String[] args){ String string1 = "Hello I am Jack. I live in United States. I live in california state."; String string2 = "I live in"; if(string1.indexOf(string2) >= -1){ System.out.println("string2 is sub string of string1"); } else { System.out.println("string2 is not sub string of string1"); } } } | ||||
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Like Discuss Correct / Improve  string  coding  code | ||||
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Ans. public class Class{ public static void main(String[] args){ String string1 = "Hello I am Jack. I live in United States. I live in california state."; String string2 = "I live in"; int startIndex = 0; int endIndex = string1.length()-1; int countNoOfOccurences = 0; String remainingString = string1; while(startIndex < endIndex){ if(remainingString.indexOf(string2) != -1){ countNoOfOccurences++; startIndex = remainingString.indexOf(string2) + string2.length(); remainingString = remainingString.substring(startIndex); } else { break; } } System.out.println(countNoOfOccurences); } } | ||||
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Like Discuss Correct / Improve  string  code  coding Asked in 2 Companies | ||||
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Ans. public class Class { public static void main(String[] args) { String str = "mallam"; String firstHalf = str.substring(0, str.length() / 2); String secondHalf = str.substring(str.length() / 2); if (firstHalf.equals(new StringBuilder(secondHalf).reverse().toString())) { System.out.println("It's a Colidrome"); } else { System.out.println("It's not a Colidrome"); } } } | ||||
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Like Discuss Correct / Improve  Colidrome  String  Code  Coding Asked in 1 Companies | ||||
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Ans. public class Class{ public static void main(String[] args){ for(int i=1;i<= 100;i++){ if(i%3 == 0){ if(i%5 == 0){ System.out.println("FizzBuzz"); } System.out.println("Fizz"); } else if(i%5 == 0){ System.out.println("Buzz"); } else { System.out.println(i); } } } } | ||||
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Like Discuss Correct / Improve  code  coding Asked in 2 Companies | ||||
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Ans. public class BuggyBread { public static void main(String args[]) { Map<Character, Integer> countMap = new HashMap(); String str = "hello world"; for (char character : str.toCharArray()) { if (countMap.containsKey(character)) { countMap.put(character, countMap.get(character) + 1); } else { countMap.put(character, 1); } } System.out.println(countMap); } } | ||||
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Like Discuss Correct / Improve  String  Code  Coding  Character Asked in 1 Companies | ||||
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Ans. public class BuggyBread{ public static void main (String args[]) { Set<Character> set = new HashSet(); Set<Character> setWithDuplicateChar = new HashSet(); String str = "hello world"; for(char character: str.toCharArray()){ if(set.contains(character)){ setWithDuplicateChar.add(character); } else { set.add(character); } } System.out.println(setWithDuplicateChar); } } | ||||
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Like Discuss Correct / Improve  String  Code  Coding | ||||
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This question was recently asked at 'Compro Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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Like Discuss Correct / Improve  code.coding.0 and cross game Asked in 1 Companies | ||||
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Ans. int arr[]={1,3,5,6,4,8,9,2,10}; Arrays.sort(); System.out.println(arr[arr.length-1]); | ||||
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Like Discuss Correct / Improve  code  coding  find in array Asked in 1 Companies | ||||
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Ans. public class BuggyBread { public static void main(String args[]) { String str1 = "we are what we repeatedly Do excellence, then, is not an act but a haBit"; String str2 = "we are what we repeatedly Do is"; String[] str1Words = str1.split(" "); String[] str2Words = str2.split(" "); Set str1WordsSet = new HashSet(); for(String word:str1Words){ str1WordsSet.add(word); } for(String word:str2Words){ if(str1WordsSet.contains(word)){ System.out.println(word); } } } } | ||||
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Like Discuss Correct / Improve  String  coding  code | ||||
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Ans. public class BuggyBread { public static void main(String args[]) { String str1 = "we are what we repeatedly Do excellence, then, is not an act but a haBit"; String str2 = "we are what we repeatedly Do is"; String[] str1Words = str1.split(" "); String[] str2Words = str2.split(" "); Set str1WordsSet = new HashSet(); for(String word:str1Words){ str1WordsSet.add(word); } int commonWordsCount = 0; for(String word:str2Words){ if(str1WordsSet.contains(word)){ commonWordsCount++; } } System.out.println(commonWordsCount); } } | ||||
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Like Discuss Correct / Improve  String  coding  code | ||||
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Ans. public class BuggyBread { public static void main(String args[]) { String str = "we are what we repeatedly Do excellence, then, is not an act but a haBit"; Set<String> wordSet = new LinkedHashSet(); // Using Linked Hash Set as we would like to retrieve words in the insertion order for(String word: str.split(" ")){ wordSet.add(word); } for(String word: wordSet){ System.out.print(word); System.out.print(" "); } } } | ||||
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Like Discuss Correct / Improve  String  coding  code Asked in 1 Companies basic | ||||
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Ans. public class BuggyBread { public static void main(String args[]) { String str = "we are what we repeatedly do excellence then is not an act but a haBit"; Set<String> wordSet = new TreeSet(); // Using Linked Hash Set as we would like to retrieve words in the insertion order for(String word: str.split(" ")){ wordSet.add(word); } for(String word: wordSet){ System.out.print(word); System.out.print(" "); } } } | ||||
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Like Discuss Correct / Improve  String  coding  code | ||||
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Ans. public class BuggyBread { public static void main(String args[]) { displayNumbersBetween(2,10); } private static void displayNumbersBetween(int start,int end){ if(start > end){ return ; } else { System.out.println(start); displayNumbersBetween(start+1,end); } } } | ||||
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Like Discuss Correct / Improve  recursion  code  coding | ||||
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Ans. public class BuggyBread { public static void main(String args[]) { displayNumbersBetween(5,7); } private static void displayNumbersBetween(int start,int end){ if(start > end){ return ; } else { for(int x=1;x<=start;x++){ System.out.print("*"); } System.out.println(""); displayNumbersBetween(start+1,end); } } } | ||||
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Like Discuss Correct / Improve  recursion  code  coding | ||||
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Ans. public class BuggyBread { public static void main(String args[]) { for(int x=1;x<=10;x++){ for(int y=1;y<=x;y++){ System.out.print("*"); } System.out.println(""); } } } | ||||
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Ans. public class Class{ public static void main(String[] args){ String str = "xyz@123.com"; if(!str.contains("@") && !str.contains(".") && (str.indexOf('.') < str.indexOf('@'))){ System.out.println("Not a Valid Email Address"); } } } | ||||
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Like Discuss Correct / Improve  validate an email address  coding  code Asked in 3 Companies | ||||
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Ans. public class Class{ public static void main(String[] args){ String str = "xyz123.co@m"; if(str.indexOf('.') < str.indexOf('@')){ System.out.println("Not a Valid Email Address"); } } } | ||||
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Like Discuss Correct / Improve  string  string.indexOf  coding  code | ||||
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Ans. Arrays.sort(numArray); double median; if (numArray.length % 2 == 0) median = ((double)numArray[numArray.length/2] (double)numArray[numArray.length/2 - 1])/2; else median = (double) numArray[numArray.length-1/2]; | ||||
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Like Discuss Correct / Improve  coding Asked in 2 Companies | ||||
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This question was recently asked at 'karya technology'.This question is still unanswered. Can you please provide an answer. | ||||
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Like Discuss Correct / Improve  coding  code Asked in 1 Companies | ||||
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Ans. https://www.geeksforgeeks.org/check-for-balanced-parentheses-in-an-expression/ | ||||
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Like Discuss Correct / Improve  string  code  coding Asked in 14 Companies | ||||
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This question was recently asked at 'Amazon'.This question is still unanswered. Can you please provide an answer. | ||||
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Like Discuss Correct / Improve  Code  Coding Asked in 1 Companies | ||||
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This question was recently asked at 'Amazon'.This question is still unanswered. Can you please provide an answer. | ||||
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Like Discuss Correct / Improve  code  Coding Asked in 1 Companies | ||||
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This question was recently asked at 'Bind Software Innovations'.This question is still unanswered. Can you please provide an answer. | ||||
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Like Discuss Correct / Improve  oding  cod Asked in 1 Companies | ||||
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This question was recently asked at 'Horizon Solutions'.This question is still unanswered. Can you please provide an answer. | ||||
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Like Discuss Correct / Improve  coding  code Asked in 1 Companies | ||||
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Ans. int convert(int binaryInt) { int sumValue=0; int multiple = 1; while(binaryInt > 0) { binaryDigit = binaryInt; binaryInt = binaryInt /10; sumValue = sumValue (binaryDigit * multiple); multiple = multiple * 2; } return sumValue; } | ||||
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Like Discuss Correct / Improve  code  coding Asked in 1 Companies basic | ||||