c++  one loop
\nclass Solution {\npublic:\n    int smallestEqual(vector<int>& nums) {\n        for (int i = 0; i < nums.size(); i++) {\n            if ( (i % 10) == nums[i]) 
```\nclass Solution {\npublic:\n    int smallestEqual(vector<int>& nums) {\n        for (int i = 0; i < nums.size(); i++) {\n            if ( (i % 10) == nums[i]) return i;  \n        } \n        return -1;        \n    }\n};\n```
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