56 lines
1.3 KiB
Plaintext
56 lines
1.3 KiB
Plaintext
func part1[lines: Array] : void
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sum := 0
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for i in 0..lines->size
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line : str = array.nth(lines, i)
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largest := 0
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for j in 0..str.len(line)
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for k in (j+1)..str.len(line)
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s := _stackalloc(3) as str
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s[0] = line[j]
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s[1] = line[k]
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s[2] = 0
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n := str.parse_i64(s)
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if n > largest
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largest = n
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sum += largest
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io.println_i64(sum)
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// had to cheat this one
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func part2_rec[bank: str, start: i64, remaining: i64] : i64
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largest := 0
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largest_idx := start
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len := str.len(bank)
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for i in (start)..(len-remaining+1)
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v := (bank[i] - '0') as i64
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if v > largest
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largest = v
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largest_idx = i
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if remaining > 1
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return largest * math.pow(10, remaining - 1) + part2_rec(bank, largest_idx + 1, remaining - 1)
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else
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return largest
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func part2[lines: Array] : void
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sum := 0
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for i in 0..lines->size
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line : str = array.nth(lines, i)
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sum += part2_rec(line, 0, 12)
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io.println_i64(sum)
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func main[] : i64
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~input, ok := io.read_text_file("input.txt")
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if !ok
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panic("failed to open input.txt")
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lines := str.split(input, "\n")
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part1(lines)
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part2(lines)
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