From 6bc0999dd60f3c5ba6e6aee95d7b33ddd0c126cc Mon Sep 17 00:00:00 2001
From: Mohammed Muzakkir Fazal <56503557+mdmzfzl@users.noreply.github.com>
Date: Sat, 26 Aug 2023 18:03:51 +0300
Subject: [PATCH] Create: 0837-new-21-game.c
---
c/0837-new-21-game.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 c/0837-new-21-game.c
diff --git a/c/0837-new-21-game.c b/c/0837-new-21-game.c
new file mode 100644
index 000000000..3a26222c3
--- /dev/null
+++ b/c/0837-new-21-game.c
@@ -0,0 +1,27 @@
+double new21Game(int n, int k, int maxPts) {
+ if (k == 0 || n >= k + maxPts) {
+ return 1.0;
+ }
+
+ double windowSum = 1.0;
+ double probability = 0.0;
+
+ double dp[n + 1];
+ dp[0] = 1.0;
+
+ for (int i = 1; i <= n; i++) {
+ dp[i] = windowSum / maxPts;
+
+ if (i < k) {
+ windowSum += dp[i];
+ } else {
+ probability += dp[i];
+ }
+
+ if (i >= maxPts) {
+ windowSum -= dp[i - maxPts];
+ }
+ }
+
+ return probability;
+}
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