From 48fe778c503c688edc6972b3cd6071a0e901fd6f Mon Sep 17 00:00:00 2001
From: Muhammad Nauman Raza <devraza.hazard643@slmail.me>
Date: Fri, 6 Dec 2024 09:04:54 +0000
Subject: [PATCH] solutions: 40

---
 src/bin/champernownes_constant.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 src/bin/champernownes_constant.rs

diff --git a/src/bin/champernownes_constant.rs b/src/bin/champernownes_constant.rs
new file mode 100644
index 0000000..3b59ba5
--- /dev/null
+++ b/src/bin/champernownes_constant.rs
@@ -0,0 +1,16 @@
+fn main() {
+    let mut string: String = "0.".to_string();
+    for i in 1..=185185 {
+        string.push_str(&i.to_string());
+    }
+    
+    let digits = vec![1, 10, 100, 1000, 10_000, 100_000, 1_000_000];
+    let mut multiplying: Vec<u32> = vec![];
+
+    for i in digits {
+        let digit = &string.chars().nth(i+1);
+        multiplying.push(digit.unwrap().to_digit(10).unwrap());
+    }
+
+    println!("{}", multiplying.iter().product::<u32>());
+}