hasSubsequence (original) (raw)
Examine if array has a subsequence.
Similar: randomSubsequence, subsequences, hasSubsequence, searchSubsequence.
Similar: hasValue, hasPrefix, hasInfix, hasSuffix, hasSubsequence, hasPermutation, hasPath.
function hasSubsequence(x, y, fc, fm) // x: an array // y: search subsequence // fc: compare function (a, b) // fm: map function (v, i, x)
const xarray = require('extra-array');
var x = [1, 2, 3, 4]; xarray.hasSubsequence(x, [2, 4]); // → true
xarray.hasSubsequence(x, [-2, -4]); // → false
xarray.hasSubsequence(x, [-2, -4], (a, b) => Math.abs(a) - Math.abs(b)); // → true
xarray.hasSubsequence(x, [-2, -4], null, v => Math.abs(v)); // → true