找出不同的个数

陶远航

The variable cnt is initialized to 0 (cnt = 0) at the beginning of the code because it is used to count the number of distinct elements. By setting it to 0 initially, we ensure that it starts counting from zero before iterating through the array.

Regarding the input you provided (5 1 1 2 4 5), there seems to be an error as the first number "5" does not represent the number of elements in the array. It appears to be part of the array itself. If you provide the correct input format, I can assist you with modifying the code accordingly.
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