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C++ How to check if all values in array are different?

Hello I'm trying to check any values that are inputted in an array of any size are different. I am trying to use a nested loop for this code but cannot get a proper if statement to check that each value in the array are different. I'd appreciate any help!

for (unsigned i = 0; i < size; i++)
    for (unsigned k = i + 1; k < size; k++)
        if (arr[i] == arr[k]){
            return false;
        }
return true;

Ok thank you guys for the help your suggestions worked!

Solution

  • There are two problems in your code:

     1. first loop should have j instead if i.

2. The second loop should start from i+1.

    Hope this helps.