Question: roblem 3: method isColUnique [25 pts] * Given a 2D array of size 9x9 that only contains values from 1 to 9, and an integer

roblem 3: method isColUnique [25 pts]

* Given a 2D array of size 9x9 that only contains values from 1 to 9, and an integer n < 9,

* design a method that checks whether the elements of column at index n of A

* are all different.

* Your method returns a boolean value.

eclipse java code

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