37 lines
823 B
Zig
37 lines
823 B
Zig
const std = @import("std");
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pub fn main() !void {
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const stdin = std.io.getStdIn();
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var buf_io = std.io.bufferedReader(stdin.reader());
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var reader = buf_io.reader();
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var buf = [_]u8{0} ** 100000;
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_ = try reader.readAll(&buf);
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std.debug.print("{}", .{calculate_floor(&buf)});
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}
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fn calculate_floor(instructions: []const u8) i32 {
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var current: i32 = 0;
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var i: i32 = 1;
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for (instructions) |c| {
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switch (c) {
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0 => break,
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'(' => current += 1,
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')' => current -= 1,
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else => continue,
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}
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if (current < 0) {
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return i;
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}
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i += 1;
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}
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return -1;
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}
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test "day-tests" {
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try std.testing.expectEqual(calculate_floor(")"), 1);
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try std.testing.expectEqual(calculate_floor("()())"), 5);
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}
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