From 9614a6c9c1141c11c2b587633f83d19ea09d0c92 Mon Sep 17 00:00:00 2001
From: Michael Manring <michael@manring>
Date: Fri, 12 Aug 2022 12:15:49 +0700
Subject: pwc030 solution in dart

---
 challenge-030/pokgopun/dart/ch-1.dart | 10 ++++++++++
 challenge-030/pokgopun/dart/ch-2.dart | 27 +++++++++++++++++++++++++++
 challenge-030/pokgopun/go/ch-2.go     | 16 ++++++++++++++--
 3 files changed, 51 insertions(+), 2 deletions(-)
 create mode 100644 challenge-030/pokgopun/dart/ch-1.dart
 create mode 100644 challenge-030/pokgopun/dart/ch-2.dart

diff --git a/challenge-030/pokgopun/dart/ch-1.dart b/challenge-030/pokgopun/dart/ch-1.dart
new file mode 100644
index 0000000000..74965a6b86
--- /dev/null
+++ b/challenge-030/pokgopun/dart/ch-1.dart
@@ -0,0 +1,10 @@
+void main() {
+  int startY = 2019;
+  int endY = 2100;
+  for (var y = startY; y <= endY; y++) {
+    var t = DateTime(y, 12, 25);
+    if (t.weekday == DateTime.sunday) {
+      print(t);
+    }
+  }
+}
diff --git a/challenge-030/pokgopun/dart/ch-2.dart b/challenge-030/pokgopun/dart/ch-2.dart
new file mode 100644
index 0000000000..3294d0fee6
--- /dev/null
+++ b/challenge-030/pokgopun/dart/ch-2.dart
@@ -0,0 +1,27 @@
+/*
+Write a script to print all possible series of 3 positive numbers, where in each series at least one of the number is even and sum of the three numbers is always 12. For example, 3,4,5.
+*/
+// (odd + odd) + odd => (even) + odd => odd, thus three numbers that sum to an even number cannot be all odd, no need to care about the even number
+// Assume numbers in series can be duplicated and unordered as none of there contraints are mentioned
+
+void main() {
+  int n = 12;
+  for (int i = 0; i <= n; i++) {
+    //for (int j = 0; j <= n - i; j++) {
+    /*
+    for (int j = i; j <= n - i; j++) {
+      if (n - i - j < j) {
+        break;
+      }
+      */
+    /**/
+    for (int j = i + 1; j <= n - i; j++) {
+      if (n - i - j <= j) {
+        break;
+      }
+      /**/
+      print(
+          "${i.toString().padLeft(2)}, ${j.toString().padLeft(2)}, ${(n - i - j).toString().padLeft(2)}");
+    }
+  }
+}
diff --git a/challenge-030/pokgopun/go/ch-2.go b/challenge-030/pokgopun/go/ch-2.go
index 8d5f287ccd..2a32bbc453 100644
--- a/challenge-030/pokgopun/go/ch-2.go
+++ b/challenge-030/pokgopun/go/ch-2.go
@@ -15,8 +15,20 @@ func main() {
 	w := bufio.NewWriter(os.Stdout)
 	n := 12
 	for i := 0; i <= n; i++ {
-		for j := 0; j <= 12-i; j++ {
-			fmt.Fprintf(w, "%d, %d, %d\n", i, j, 12-i-j)
+		//for j := 0; j <= n-i; j++ {
+		/*
+			for j := i; j <= n-i; j++ {
+				if n-i-j < j {
+					break
+				}
+		*/
+		/**/
+		for j := i + 1; j <= n-i; j++ {
+			if n-i-j <= j {
+				break
+			}
+			/**/
+			fmt.Fprintf(w, "%2d, %2d, %2d\n", i, j, n-i-j)
 		}
 	}
 	w.Flush()
-- 
cgit