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-rw-r--r--rust/grains/src/lib.rs10
1 files changed, 10 insertions, 0 deletions
diff --git a/rust/grains/src/lib.rs b/rust/grains/src/lib.rs
new file mode 100644
index 0000000..9caa693
--- /dev/null
+++ b/rust/grains/src/lib.rs
@@ -0,0 +1,10 @@
+pub fn square(s: u32) -> u64 {
+ match s {
+ 1..=64 => 2_u64.pow(s-1),
+ _ => panic!("Square must be between 1 and 64")
+ }
+}
+
+pub fn total() -> u64 {
+ (1..=64).map(square).sum()
+}