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Diffstat (limited to 'prolog/problems/lists/count_3/en.py')
-rw-r--r-- | prolog/problems/lists/count_3/en.py | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/prolog/problems/lists/count_3/en.py b/prolog/problems/lists/count_3/en.py new file mode 100644 index 0000000..799594e --- /dev/null +++ b/prolog/problems/lists/count_3/en.py @@ -0,0 +1,12 @@ +id = 120 +name = 'count/3' +slug = 'find the number of occurrences of an element in list' + +description = '''\ +<p><code>count(X, L, N)</code>: <code>N</code> is the number of times the element <code>X</code> appears in the list <code>L</code>.</p> +<pre> + ?- count(1, [1,2,1,3,1], N). + N = 3. +</pre>''' + +hint = {} |