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Collections.frequency
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How to use
frequency
method
in
java.util.Collections

Best Java code snippets using java.util.Collections.frequency (Showing top 20 results out of 882)

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  • PrintStream.println
origin: stackoverflow.com

 List asList = Arrays.asList(array);
Set<String> mySet = new HashSet<String>(asList);
for(String s: mySet){

 System.out.println(s + " " +Collections.frequency(asList,s));

}
origin: stackoverflow.com

 List<String> list = new ArrayList<String>();
list.add("aaa");
list.add("bbb");
list.add("aaa");

Set<String> unique = new HashSet<String>(list);
for (String key : unique) {
  System.out.println(key + ": " + Collections.frequency(list, key));
}
origin: stackoverflow.com

 int count = Collections.frequency(party.values(), 1);
System.out.println(count);
===> 4
origin: stackoverflow.com

 import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class stackexample {
  public static void main(String[] args) {
    List<Integer> values = Arrays.asList( 5, 0, 0, 2 );
    int occurrences = Collections.frequency(values, 0);
    System.out.println("occurrences of zero is " + occurrences); //shows 0 but answer should be 2
  }
}
origin: stackoverflow.com

System.out.println(java.util.Collections.frequency(table.getValue(), "x"));
origin: stackoverflow.com

 import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Test{
  public static void main(String[] args) {
    String[] city = {"texas", "ny", "sydney", "ny", "paris", "texas", "ny"};
    List<String> asList = Arrays.asList(city);
    Map<String, Integer> map= new HashMap<String, Integer>();
    for(String s: city){
      map.put(s,Collections.frequency(asList,s));
    }
    System.out.println(map);

  }
}
origin: stackoverflow.com

 private void removeTheDuplicates(List<Customer>myList) {
  for(ListIterator<Customer>iterator = myList.listIterator(); iterator.hasNext();) {
    Customer customer = iterator.next();
    if(Collections.frequency(myList, customer) > 1) {
      iterator.remove();
    }
  }
  System.out.println(myList.toString());

}
origin: stackoverflow.com

 public int countPacks(String flavor) {
  int numOccurrences = java.util.Collections.frequency(packets, flavor);
  if(numOccurrences == 0) {
   System.out.println("You have not entered a correct flavor");
  }
  return numOccurrences;
}
origin: stackoverflow.com

 List<String>products = ...
List<String>cart = ...

for (String cartItem : cart) {
    int occurrences = Collections.frequency(products, cartItem);

    if (occurrences > 0) {
     System.out.println(cartItem + ": " + occurrences);
    }
}
origin: stackoverflow.com

 List<Integer> theList = Arrays.asList(1, 3, 4, 3, 4, 3, 2, 3, 3, 3, 3, 3);
Integer maxOccurredElement = theList.stream()
    .reduce(BinaryOperator.maxBy((o1, o2) -> Collections.frequency(theList, o1) -
            Collections.frequency(theList, o2))).orElse(null);
System.out.println(maxOccurredElement);
origin: stackoverflow.com

 int[] arr = {1, 2, 3};
Integer[] boxedArr = new Integer[arr.length];
for(int i = 0; i < arr.length; i++)
  boxedArr[i] = arr[i];
System.out.println(Collections.frequency(Arrays.asList(boxedArr), 1));
origin: stackoverflow.com

 Set<String> uniqueSet = new HashSet<String>(list);
for (String temp : uniqueSet)
{
  System.out.println(temp + ": " + Collections.frequency(list, temp));
}
origin: stackoverflow.com

List<Integer> freqList=new ArrayList<Integer>();
 // Add numebers to this list.
 for (int i = 10; i <20; i++) {
  int freq=Collections.frequency(freqList, i);
          // This will return frequency of number
   System.out.println(i+"  "+freq);  
 }
origin: stackoverflow.com

 int sum= 0;
for (Integer[] arr: list) {
  sum+=Collections.frequency(Arrays.asList(arr), 1);
}
System.out.println(sum);
origin: stackoverflow.com

 void countdigit(Integer[] x) {
  List<Integer> ints = Arrays.asList(x);
  for(int item : x) {
    int frequency = Collections.frequency(ints, item);
    System.out.println(frequency);
  }
}
origin: stackoverflow.com

 accnums[0] = 1;
accnums[1] = 2;
final int count = accnums.length
  - Collections.frequency(Arrays.asList(accnums), null);
System.out.println("You have used " + count + " slots");
origin: stackoverflow.com

 import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class stackexample {
  public static void main(String[] args) {
    List<Integer> values = Arrays.asList( 5, 0, 0, 2 );
    int occurrences = Collections.frequency(values, 0);
    System.out.println("occurrences of zero is " + occurrences); //shows 0 but answer should be 2
  }
}
origin: stackoverflow.com

 List asList = Arrays.asList(array);
Set<String> mySet = new HashSet<String>(asList);
for(String s : mySet) {
  System.out.println(s + " " + Collections.frequency(asList, s));
}
origin: stackoverflow.com

int[] data = new int[] { 5,0, 0, 1};
 List<Integer> intList = new ArrayList<Integer>();
 for (int index = 0; index < data.length; index++)
 {
   intList.add(data[index]);
 }
 int occurrences = Collections.frequency(intList, 0);
 System.out.println("occurrences of zero is " + occurrences);
origin: stackoverflow.com

List<String> list = Arrays.asList(text.split(" "));
   Set<String> uniqueWords = new HashSet<String>(list);
   for (String word : uniqueWords) {
     System.out.println(word + ": " + Collections.frequency(list, word));
   }
java.utilCollectionsfrequency

Javadoc

Returns the number of elements in the Collection that match the Object passed. If the Object is null, then the number of null elements is returned.

Popular methods of Collections

  • emptyList
    Returns the empty list (immutable). This list is serializable.This example illustrates the type-safe
  • sort
  • singletonList
    Returns an immutable list containing only the specified object. The returned list is serializable.
  • unmodifiableList
    Returns an unmodifiable view of the specified list. This method allows modules to provide users with
  • emptyMap
    Returns the empty map (immutable). This map is serializable.This example illustrates the type-safe w
  • emptySet
    Returns the empty set (immutable). This set is serializable. Unlike the like-named field, this metho
  • unmodifiableMap
    Returns an unmodifiable view of the specified map. This method allows modules to provide users with
  • singleton
    Returns an immutable set containing only the specified object. The returned set is serializable.
  • unmodifiableSet
    Returns an unmodifiable view of the specified set. This method allows modules to provide users with
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    Returns an immutable map, mapping only the specified key to the specified value. The returned map is
  • addAll
    Adds all of the specified elements to the specified collection. Elements to be added may be specifie
  • reverse
    Reverses the order of the elements in the specified list. This method runs in linear time.
  • addAll,
  • reverse,
  • unmodifiableCollection,
  • shuffle,
  • enumeration,
  • list,
  • synchronizedMap,
  • synchronizedList,
  • reverseOrder,
  • emptyIterator

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