add 1154

Author: cch123

S1154-ordinal-number-of-date/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "description"
+version = "0.1.0"
+authors = ["xargin <cao1988228@163.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

S1154-ordinal-number-of-date/src/main.rs

@@ -0,0 +1,34 @@
+fn main() {
+    println!("Hello, world!");
+}
+
+/*
+ * @lc app=leetcode.cn id=1154 lang=rust
+ *
+ * [1154] 一年中的第几天
+ */
+impl Solution {
+    pub fn day_of_year(date: String) -> i32 {
+        let day_for_normal = vec![31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+        let day_for_leap = vec![31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+        let ymd: Vec<&str> = date.split("-").collect();
+        let (y, m, d) = (
+            ymd[0].parse::<i32>().unwrap(),
+            ymd[1].parse::<i32>().unwrap(),
+            ymd[2].parse::<i32>().unwrap(),
+        );
+        let mut should_use = day_for_normal;
+        if Self::is_leap(y) {
+            should_use = day_for_leap;
+        }
+        let mut res = 0;
+        (0..m - 1).for_each(|i| {
+            res += should_use[i as usize];
+        });
+        res + d
+    }
+    fn is_leap(y: i32) -> bool {
+        (y % 4 == 0 && y % 100 != 0) || y % 400 == 0
+    }
+}
+