"Leetcode-Interview algorithm classic-java Implementation" "217-contains Duplicate (contains duplicate elements)"

"217-contains Duplicate (contains repeating elements)" "leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index" code Download "Https://github.com/Wang-Jun-Chao" Original Question

Given an array of integers, find if the array contains any duplicates. Your function should return TRUE if any value appears at least twice in the array, and it should return FALSE if every ele ment is distinct.

Main Topic

Given an array of integers, determine whether the array contains duplicate elements. If any number in the array appears at least two times, your function should return true if each element is unique and return false.

Thinking of solving problems

Using the Set data structure

Code Implementation

Algorithm implementation class

Import Java.util.hashset;import Java.util.Set; Public classSolution { PublicBooleancontainsduplicate(int[] nums) {the number of elements is greater than 1 to do the following        if(Nums! =NULL&& nums.length >1) {//Create a HashSetSet<integer>Set=NewHashset<> (nums.length); for(intI:nums) {//Returns True if the element already exists                if(Set. Contains (i)) {return true; }//Not added to the element collection                Else{Set. Add (i); }            }        }return false; }}

Evaluation Results

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"Leetcode-Interview algorithm classic-java Implementation" "217-contains Duplicate (contains duplicate elements)"