217Contains Duplicate
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class Solution {
public boolean containsDuplicate(int[] nums) {
Set<Integer> set = new HashSet<Integer>();
int size = nums.length;
for(int i=0;i<size;++i){
if(set.contains(nums[i])){
return true;
}
set.add(nums[i]);
}
return false;
}
}
public boolean containsDuplicate(int[] nums) {
Set<Integer> set = new HashSet<Integer>();
int size = nums.length;
for(int i=0;i<size;++i){
if(set.contains(nums[i])){
return true;
}
set.add(nums[i]);
}
return false;
}
}
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