find unique values in an array Problem: given an array that contains duplicates (except one value), find the one value that does not have a duplicate in that array. Explain the complexity of your algorithm. So in the array: A = [2, 3, 4, 5, 2, 3, 4] your algorithm should return...
import java.util.HashMap; import java.util.Map; import java.util.Set; /** * @author Crunchify.com * */ public class CrunchifyFindDuplicatesCharFromString { Map<Character, Integer> crunchifyAllDuplicate; // Returns a Set view of the keys contained in this map Set<Character> crunchifyKey...
Map<Integer,Long>map=newHashMap<>();for(inti:numArray){if(map.containsKey(i)){//this element is in the map alreadymap.put(i,map.get(i)+1);}else{//found a new elementmap.put(i,1L);}} Now we can use theMapkeys and values to count duplicates, and even collect the duplicate and...
3. Collectors.toMap() – To Count Duplicates Sometimes, we are interested in finding out which elements are duplicates and how many times they appeared in the original list. We can use aMapto store this information. We have to iterate over the list,put the element as the Map key, and al...
@Genius, it will work but it will not print duplicates in the order they appear in original String. Nevertheless, if that's not stated, you can use it. Replacing TreeMap with LinkedHashMap will print the repeated character in the same order they appear in given input. ReplyUnknownJune 1...
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