Usage

var maxsorted = require( '@stdlib/stats-base-maxsorted' );

maxsorted( N, x, stride )

Computes the maximum value of a sorted strided array x.

var x = [ 1.0, 2.0, 3.0 ];
var N = x.length;

var v = maxsorted( N, x, 1 );
// returns 3.0

x = [ 3.0, 2.0, 1.0 ];
N = x.length;

v = maxsorted( N, x, 1 );
// returns 3.0

The function has the following parameters:

• N: number of indexed elements.
• x: sorted input Array or typed array.
• stride: index increment for x.

The N and stride parameters determine which elements in x are accessed at runtime. For example, to compute the maximum value of every other element in x,

var floor = require( '@stdlib/math-base-special-floor' );

var x = [ 1.0, 2.0, 2.0, -7.0, 3.0, 3.0, 4.0, 2.0 ];
var N = floor( x.length / 2 );

var v = maxsorted( N, x, 2 );
// returns 4.0

Note that indexing is relative to the first index. To introduce an offset, use typed array views.

var Float64Array = require( '@stdlib/array-float64' );
var floor = require( '@stdlib/math-base-special-floor' );

var x0 = new Float64Array( [ 2.0, 1.0, 2.0, 2.0, -2.0, 2.0, 3.0, 4.0 ] );
var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element

var N = floor( x0.length / 2 );

var v = maxsorted( N, x1, 2 );
// returns 4.0

maxsorted.ndarray( N, x, stride, offset )

Computes the maximum value of a sorted strided array using alternative indexing semantics.

var x = [ 1.0, 2.0, 3.0 ];
var N = x.length;

var v = maxsorted.ndarray( N, x, 1, 0 );
// returns 3.0

The function has the following additional parameters:

• offset: starting index for x.

While typed array views mandate a view offset based on the underlying buffer, the offset parameter supports indexing semantics based on a starting index. For example, to calculate the maximum value for every other value in x starting from the second value

var floor = require( '@stdlib/math-base-special-floor' );

var x = [ 2.0, 1.0, 2.0, 2.0, -2.0, 2.0, 3.0, 4.0 ];
var N = floor( x.length / 2 );

var v = maxsorted.ndarray( N, x, 2, 1 );
// returns 4.0