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# tf.unique_with_counts

Finds unique elements in a 1-D tensor.

This operation returns a tensor `y` containing all of the unique elements of `x` sorted in the same order that they occur in `x`. This operation also returns a tensor `idx` the same size as `x` that contains the index of each value of `x` in the unique output `y`. Finally, it returns a third tensor `count` that contains the count of each element of `y` in `x`. In other words:

`y[idx[i]] = x[i] for i in [0, 1,...,rank(x) - 1]`

#### For example:

``````# tensor 'x' is [1, 1, 2, 4, 4, 4, 7, 8, 8]
y, idx, count = unique_with_counts(x)
y ==> [1, 2, 4, 7, 8]
idx ==> [0, 0, 1, 2, 2, 2, 3, 4, 4]
count ==> [2, 1, 3, 1, 2]
``````

`x` A `Tensor`. 1-D.
`out_idx` An optional `tf.DType` from: `tf.int32, tf.int64`. Defaults to `tf.int32`.
`name` A name for the operation (optional).

A tuple of `Tensor` objects (y, idx, count).
`y` A `Tensor`. Has the same type as `x`.
`idx` A `Tensor` of type `out_idx`.
`count` A `Tensor` of type `out_idx`.

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