Sorting, Searching, and Counting

Sorting

cupy.sort	Returns a sorted copy of an array with a stable sorting algorithm.
cupy.lexsort	Perform an indirect sort using an array of keys.
cupy.argsort	Returns the indices that would sort an array with a stable sorting.
cupy.msort	Returns a copy of an array sorted along the first axis.
cupy.sort_complex	Sort a complex array using the real part first, then the imaginary part.
cupy.partition	Returns a partitioned copy of an array.
cupy.argpartition	Returns the indices that would partially sort an array.

See also

cupy.ndarray.sort()

Searching

cupy.argmax	Returns the indices of the maximum along an axis.
cupy.nanargmax	Return the indices of the maximum values in the specified axis ignoring NaNs.
cupy.argmin	Returns the indices of the minimum along an axis.
cupy.nanargmin	Return the indices of the minimum values in the specified axis ignoring NaNs.
cupy.nonzero	Return the indices of the elements that are non-zero.
cupy.flatnonzero	Return indices that are non-zero in the flattened version of a.
cupy.where	Return elements, either from x or y, depending on condition.
cupy.argwhere	Return the indices of the elements that are non-zero.
cupy.searchsorted	Finds indices where elements should be inserted to maintain order.

Counting

cupy.count_nonzero

Counts the number of non-zero values in the array.