Refactor and add tests

Folders need to have 'sensible' names for hare test to detect them.

1 files changed, 55 insertions, 0 deletions

diff --git a/one/1.ha b/one/1.ha
new file mode 100644
index 0000000..72a1e1a
--- /dev/null
+++ b/one/1.ha
@@ -0,0 +1,55 @@
+use fmt;
+use bufio;
+use os;
+use shlex;
+use strings;
+use strconv;
+use sort;
+use sort::cmp;
+use io;
+
+export fn main() void = {
+	do(os::stdin);
+};
+
+fn do(h: io::handle) int = {
+	const sc = bufio::newscanner(h);
+	defer bufio::finish(&sc);
+
+	let l1: []int = [];
+	let l2: []int = [];
+	defer free(l1);
+	defer free(l2);
+	for (const line => bufio::scan_line(&sc)!) {
+		const tok = strings::tokenize(line, " ");
+		let isfirst = true;
+		for (const t => strings::next_token(&tok)) {
+			if (t == "") {
+				continue;
+			};
+			const x = strconv::stoi(t)!;
+			if (isfirst) {
+				append(l1, x);
+				isfirst = false;
+			} else {
+				append(l2, x);
+			};
+		};
+	};
+	sort::sort(l1, size(int), &cmp::ints);
+	sort::sort(l2, size(int), &cmp::ints);
+	let sum = 0;
+	for (let i = 0z; i < len(l1); i += 1) {
+		const l = l1[i];
+		const j = l2[i];
+		const diff = if (l > j) {
+			yield (l, j, l - j);
+		} else {
+			yield (j, l, j - l);
+		};
+		fmt::printfln("{} - {} = {}", diff.0, diff.1, diff.2)!;
+		sum += diff.2;
+	};
+	fmt::println(sum)!;
+	return sum;
+};