Problems On Array
        The following section contains the problem names along with their explanations.
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              Rotate Matrix
              Given an unsorted integer array, find the first missing positive integer.
              
             
           
          
            
              
                
              
              The Celebrity Problem
              Can you find the stranger in the party ?
              
             
           
          
            
              
                
              
              Is Sudoko Valid ?
              Can check if the Sudoko configuration is valid ?