giles
095bb62ef9
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Stack-based RPN evaluator:
let eval_rpn tokens =
let stack = Stack.create () in
List.iter (fun tok ->
if tok is operator then
let b = Stack.pop stack in
let a = Stack.pop stack in
Stack.push (apply tok a b) stack
else
Stack.push (int_of_string tok) stack
) tokens;
Stack.pop stack
For tokens [3 4 + 2 * 5 -]:
3 4 + -> 7
7 2 * -> 14
14 5 - -> 9
Exercises Stack.create / push / pop, mixed branch on string
equality, multi-arm if/else if for operator dispatch, int_of_string
for token parsing.
39 baseline programs total.
44 lines
874 B
JSON
44 lines
874 B
JSON
{
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"anagrams.ml": 3,
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"bag.ml": 3,
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"balance.ml": 3,
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"bfs.ml": 6,
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"btree.ml": 39,
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"brainfuck.ml": 75,
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"caesar.ml": 215,
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"calc.ml": 13,
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"closures.ml": 315,
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"csv.ml": 10,
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"exception_handle.ml": 4,
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"expr_eval.ml": 16,
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"factorial.ml": 3628800,
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"fraction.ml": 7,
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"frequency.ml": 5,
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"hanoi.ml": 1023,
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"fizzbuzz.ml": 57,
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"list_ops.ml": 30,
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"json_pretty.ml": 24,
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"lambda_calc.ml": 7,
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"levenshtein.ml": 11,
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"memo_fib.ml": 75025,
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"merge_sort.ml": 44,
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"module_use.ml": 3,
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"newton_sqrt.ml": 1414,
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"mutable_record.ml": 10,
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"option_match.ml": 5,
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"pi_leibniz.ml": 314,
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"poly_stack.ml": 5,
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"queens.ml": 2,
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"quicksort.ml": 44,
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"roman.ml": 44,
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"rpn.ml": 9,
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"safe_div.ml": 20,
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"shuffle.ml": 55,
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"word_freq.ml": 8,
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"sieve.ml": 15,
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"sum_squares.ml": 385,
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"unique_set.ml": 9,
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"validate.ml": 417,
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"word_count.ml": 3
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}
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