issorted

Determine if array is sorted.

📝 Syntax

• tf = issorted(A)

• tf = issorted(A, dim)

• tf = issorted(..., direction)

• tf = issorted(A, 'rows')

📥 Input argument

• A - an nelson's variable (double, single, int8, int16, int32, int64, uint8, uint16, uint32, uint64, logical, char, string, cell).

• dim - Dimension to operate along: positive integer scalar.

• direction - Sorting direction: 'ascend' (default) or 'descend'.

• 'rows' - returns true when the elements of the first column of a matrix are sorted.

📤 Output argument

• tf - a logical: true if array is sorted.

📄 Description

tf = issorted(A) returns true if the elements of A are sorted in ascending order, and false otherwise.

💡 Example

x = [1 2 3 4];
issorted(x) % returns true
x = [1 3 2 4];
issorted(x) % returns false

% Check if a matrix is sorted by rows
A = [1 2 3; 4 5 6; 7 8 9];
issorted(A, 'rows') % returns true
A = [1 2 3; 7 8 9; 4 5 6];
issorted(A, 'rows') % returns false

🔗 See also

sort.

🕔 History

Version	📄 Description
1.0.0	initial version