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Iterative binary search on a sorted int array:
let bsearch arr target =
let n = Array.length arr in
let lo = ref 0 and hi = ref (n - 1) in
let found = ref (-1) in
while !lo <= !hi && !found = -1 do
let mid = (!lo + !hi) / 2 in
if arr.(mid) = target then found := mid
else if arr.(mid) < target then lo := mid + 1
else hi := mid - 1
done;
!found
For [1;3;5;7;9;11;13;15;17;19;21]:
bsearch a 13 = 6
bsearch a 5 = 2
bsearch a 100 = -1
sum = 7
Exercises Array.of_list + arr.(i) + multi-let 'let lo = ... and
hi = ...' + while + multi-arm if/else if/else.
49 baseline programs total.
54 lines
1.1 KiB
JSON
54 lines
1.1 KiB
JSON
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"anagrams.ml": 3,
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"brainfuck.ml": 75,
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"fraction.ml": 7,
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"frequency.ml": 5,
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"grep_count.ml": 3,
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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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"kadane.ml": 6,
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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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"palindrome.ml": 4,
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"pascal.ml": 252,
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"pi_leibniz.ml": 314,
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"pretty_table.ml": 64,
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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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"run_length.ml": 11,
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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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"unique_set.ml": 9,
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