Crear cuenta
(4)
count_occurrences([1, 2, 3, 4, 5], 5) # 1
count_occurrences([1, 2, 2, 2, 5], 2) # 3
count_occurrences([1, 2, 2, 2, 5], 7) # 0
count_occurrences([], 7) # 0
count_occurrences(["b", "a", "b", "c", "d"], "b") # 2
clean_string('abc#d##c') # "ac"
clean_string('#######') # ""
clean_string('abc##d######') # ""
clean_string('#') # ""
differencia([1, 2, 3], [1, 2, 4]) # [3, 4]
differencia([], [1, 2, 4]) # [1, 2, 4]
differencia([1, 2, 4], []) # [1, 2, 4]
differencia(["a", "b", "c"], ["b", "a", "d"]) # ['c', 'd']
hasDuplicates([1, 2, 3, 4, 5, 5]); // true
hasDuplicates([1, 2, 3, 4, 5, 6]); // false
uniqueElementsByRight( [{ id: 0, value: 'a' },
{ id: 1, value: 'b' },
{ id: 2, value: 'c' },
{ id: 1, value: 'd' },
{ id: 0, value: 'e' }
],
(a, b) => a.id == b.id
); // [ { id: 0, value: 'e' }, { id: 1, value: 'd' }, { id: 2, value: 'c' } ]
uniqueElementsByRight( [{ id: 0, value: 'a' },
{ id: 0, value: 'b' },
{ id: 0, value: 'c' },
],
(a, b) => a.id == b.id
); // [ { id: 0, value: 'c' } ]
permutator([1,2,3]); // [1, 2, 3], [1, 3, 2], [2, 1, 3], [2, 3, 1], [3, 1, 2], [3, 2, 1]
(1)<div id="myId">
<p>
<span>a</span>
<a href="https://lawebdelprogramador.com">https://lawebdelprogramador.com</a>
</p>
<p>b</p>
</div>
[p, span, a, p]