Answers for "do list have repeated values in java"

2

java 8 get duplicates in list

List<Integer> numbers = Arrays.asList(1, 2, 1, 3, 4, 4);
Set<Integer> nbrRemovedSet = new HashSet<>();

// Set.add() returns false if the element was already in the set.
Set<Integer> nbrSet = numbers
	.stream()
  	.filter(n -> !nbrRemovedSet.add(n))
  	.collect(Collectors.toSet());

// also, we can use Collections.frequency:
Set<Integer> nbrSet = numbers
	.stream()
  	.filter(i -> Collections.frequency(numbers, i) >1)
    collect(Collectors.toSet());
Posted by: Guest on February-18-2021
-1

find repeated elements in array java

for (String name : names) {
     if (set.add(name) == false) {
        // your duplicate element
     }
}
Posted by: Guest on February-26-2021
2

java 8 get duplicates in list

List<Integer> numbers = Arrays.asList(1, 2, 1, 3, 4, 4);
Set<Integer> nbrRemovedSet = new HashSet<>();

// Set.add() returns false if the element was already in the set.
Set<Integer> nbrSet = numbers
	.stream()
  	.filter(n -> !nbrRemovedSet.add(n))
  	.collect(Collectors.toSet());

// also, we can use Collections.frequency:
Set<Integer> nbrSet = numbers
	.stream()
  	.filter(i -> Collections.frequency(numbers, i) >1)
    collect(Collectors.toSet());
Posted by: Guest on February-18-2021
-1

find repeated elements in array java

for (String name : names) {
     if (set.add(name) == false) {
        // your duplicate element
     }
}
Posted by: Guest on February-26-2021

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