solutions: 16

power_digit_sum/Cargo.lock

@@ -0,0 +1,44 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "autocfg"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
+
+[[package]]
+name = "num-bigint"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
+dependencies = [
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-integer"
+version = "0.1.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "power_digit_sum"
+version = "0.1.0"
+dependencies = [
+ "num-bigint",
+]

power_digit_sum/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "power_digit_sum"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+num-bigint = "0.4.6"

power_digit_sum/src/main.rs

@@ -0,0 +1,15 @@
+use num_bigint::BigUint;
+
+fn main() {
+    let mut number: BigUint = BigUint::from(2 as u32);
+    number = number.pow(1000);
+
+    let number_list: Vec<u32> = number
+        .to_string()
+        .chars()
+        .filter_map(|c| c.to_digit(10).map(|d| d as u32))
+        .collect();
+    let sum: u32 = number_list.iter().sum();
+
+    println!("{}", sum);
+}