finding the index of a value in a multi dimentional array of doubles

im having trouble writing function index of value in multi dimentional array. value in [*,0] need check column 0 value. have far:

public int locate(double[,] arr, double value)          {              int w = arr.getlength(0);              (int x = 0; x < w; x++)              {                  if (arr[x, 0].equals(value))                  {                      return x;                  }                      return -1;              }          }

arr double array large range of distinct values, , value double looking in arr[*,0].

this give me error saying not code paths return value. wrong code , how fix it?

change to:

        public int locate(double[,] arr, double value)         {             int w = arr.getlength(0);             (int x = 0; x < w; x++)             {                 if (arr[x, 0].equals(value))                 {                     return x;                 }                                }             return -1;         }

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mitja

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