getting errors in a java class

Question

I'm very new to this java language and practicing to build my basics. So here is the code and also the error please tell me how to resolve this

class Solution {
    public int[] twoSum(int[] nums, int target) {
        
        for(int i = 0; i < nums.length; i++){
            
            for(int j = 0; j < nums.length; j++){
                
                if(nums[i]  + nums[j] == target){
                    
                    return int[]{i, j};
                }
            }
        }
        return ;
    }
}

Line 10: error: '.class' expected
                    return int[]{i, j};
                                ^
Line 10: error: not a statement
                    return int[]{i, j};
                                 ^
Line 10: error: ';' expected
                    return int[]{i, j};
                                  ^
Line 10: error: not a statement
                    return int[]{i, j};
                                    ^
Line 10: error: ';' expected
                    return int[]{i, j};
                                     ^
5 errors

score 0 · Accepted Answer · answered May 10 '21 at 07:11

0

It is not clear what you want to return if nums[i] + nums[j] never match target, but I'll asume is OK to return an empty array for that case:

class Solution { 
    public int[] twoSum(int[] nums, int target) {

    for(int i = 0; i < nums.length; i++){
        
        for(int j = 0; j < nums.length; j++){
            
            if(nums[i]  + nums[j] == target){
                // you need to add "new"
                return new int[]{i, j};
            }
        }
    }
    // you can also "return null;", or anything else
    return new int[]{};
}

}

answered May 10 '21 at 07:11

Victor Polo De Gyves Montero

1,055
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why we are adding 'new' ? – Saumya May 11 '21 at 13:45
We add `new` since all arrays are objects, so `new` will create an Array. There are ways to deal with arrays without `new`, you can check [this answer](https://stackoverflow.com/questions/39032577/declaring-arrays-without-using-the-new-keyword-in-java) for more detail. – Victor Polo De Gyves Montero May 11 '21 at 16:59

getting errors in a java class

1 Answers1