Note: This page has been translated by MathWorks. Please click here

To view all translated materals including this page, select Japan from the country navigator on the bottom of this page.

To view all translated materals including this page, select Japan from the country navigator on the bottom of this page.

Determine if array is sorted

`TF = issorted(A)`

`TF = issorted(A,dim)`

`TF = issorted(___,direction)`

`TF = issorted(___,Name,Value)`

`TF = issorted(A,'rows')`

`TF = issorted(`

returns
the logical scalar 1 (`A`

)`true`

) when the elements of `A`

are
listed in ascending order and 0 (`false`

) otherwise.

If

`A`

is a vector, then`issorted`

returns 1 when the vector elements are in ascending order.If

`A`

is a matrix, then`issorted`

returns 1 when each column of`A`

is in ascending order.If

`A`

is a multidimensional array, then`issorted`

returns 1 when`A`

is in ascending order along the first dimension whose size does not equal 1.If

`A`

is a timetable, then`issorted`

returns 1 when its row time vector is in ascending order. To check the ordering of row times or variables of a timetable with additional options, use the`issortedrows`

function.

`TF = issorted(___,`

returns
1 when `direction`

)`A`

is sorted in the order specified by `direction`

for
any of the previous syntaxes. For example, `issorted(A,'monotonic')`

returns
1 if the elements of `A`

are ascending or descending.

`TF = issorted(___,`

specifies
additional parameters for checking sort order. For example, `Name,Value`

)`issorted(A,'ComparisonMethod','abs')`

checks
if `A`

is sorted by magnitude.

`TF = issorted(`

returns
1 when the elements of the first column of a matrix are sorted. If
the first column contains repeated elements, then `A`

,'rows')`issorted`

looks
at the ordering of the second column to determine `TF`

.
In general, `issorted`

looks to the column immediately
to the right to determine `TF`

when the current and
previous columns have repeated elements.

If

`A`

is a timetable, then`issortedrows`

checks if the row time vector is in ascending order.This syntax is not supported for a matrix of character vectors.

This syntax is not recommended. Use `issortedrows`

instead.

`issortedrows`

| `sort`

| `sortrows`

Was this topic helpful?