init

problems/p36/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "p36"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

problems/p36/src/main.rs

@@ -0,0 +1,28 @@
+fn is_palindromic_base10(n: u32) -> bool {
+    let string = n.to_string();
+    string == string.chars().rev().collect::<String>()
+}
+#[test]
+fn test_is_palindromic_base10() {
+    assert!(is_palindromic_base10(585));
+}
+
+fn is_palindromic_base2(n: u32) -> bool {
+    if n.is_multiple_of(2) {
+        return false;
+    }
+    let string = format!("{:b}", n);
+    string == string.chars().rev().collect::<String>()
+}
+#[test]
+fn test_is_palindromic_base2() {
+    assert!(is_palindromic_base2(585));
+}
+
+fn main() {
+    let sum = (0..100_0000u32)
+        .filter(|&x| is_palindromic_base10(x))
+        .filter(|&x| is_palindromic_base2(x))
+        .sum::<u32>();
+    println!("sum: {sum}");
+}