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* @license Apache-2.0
*
* Copyright (c) 2025 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var resolveGetter = require( '@stdlib/array/base/resolve-getter' );
var copy = require( '@stdlib/array/base/copy' );
// MAIN //
/**
* Zips one or more arrays.
*
* ## Notes
*
* - The function assumes that the list of arrays to be zipped all have the same length.
*
* @param {Collection<Collection>} arrays - list of arrays to be zipped
* @returns {Array<Array>} output array
*
* @example
* var x = [ 1, 2, 3 ];
* var y = [ 'a', 'b', 'c' ];
*
* var z = zip( [ x, y ] );
* // returns [ [ 1, 'a' ], [ 2, 'b' ], [ 3, 'c' ] ]
*/
function zip( arrays ) {
var getters;
var list;
var out;
var arr;
var M;
var N;
var i;
var j;
M = arrays.length;
if ( M < 1 ) {
return [];
}
list = copy( arrays );
N = list[ 0 ].length;
if ( N < 1 ) {
return [];
}
getters = [];
for ( j = 0; j < M; j++ ) {
getters.push( resolveGetter( list[ j ] ) );
}
out = [];
for ( i = 0; i < N; i++ ) {
arr = [];
for ( j = 0; j < M; j++ ) {
arr.push( getters[ j ]( list[ j ], i ) );
}
out.push( arr );
}
return out;
}
// EXPORTS //
module.exports = zip;
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