feat: binrary_search

array/fase_slwo_pointer_27/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "fase_slwo_pointer_27"
+version = "0.1.0"

array/fase_slwo_pointer_27/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "fase_slwo_pointer_27"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

array/fase_slwo_pointer_27/src/main.rs

@@ -0,0 +1,48 @@
+fn main() {
+    // 可變陣列要這樣用 rust
+    let mut case_a: Vec<i32> = vec![3,2,2,3];
+    // 傳入時也要帖別聲明 &mut -> &mut case_a
+    let result = remove_element(&mut case_a, 3);
+    println!("Result: {}", result);
+}
+
+// 移除元素，返回刪除後陣列長度，快慢指針，這樣做不需要移動將後面連續的空間每一個都移動 O(n) 解法
+// 1. 先想停止條件
+// 2. 想邊界值
+pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
+    let mut slow_pointer: usize = 0; // -> vec 長度從零開始
+    let mut fast_pointer: usize = 0;
+
+    let stop = nums.len();
+    // 先想停止條件
+    while fast_pointer < stop {
+        if nums[fast_pointer] != val {
+            // 更新陣列中資料
+            nums[slow_pointer] = nums[fast_pointer];
+            slow_pointer = slow_pointer + 1;
+        }
+        fast_pointer = fast_pointer + 1;
+    }
+
+    return slow_pointer as i32;
+}
+
+// 口 口 口 口
+// 3,2,2,3
+// val = 3
+// ===============
+// f  = 0 -> 第一個是我們不要的，所以慢指針不移動，數組不更新，快指針繼續移動
+// 3 口 口 口
+// s
+// ===============
+//   f  = 1 -> 是我們要的，1. 更新慢指針的位置元素為目前走訪到的元素 2. 更新慢指針位置，表示我們陣列已經更新到哪裡了，
+// 3 2 口 口  --->  2 2 口 口
+// s         --->    s
+// ===============
+//      f  = 2 -> 重複步驟
+// 2 2 口 口  --->  2 2 2 口
+//   s       --->      s
+// ===============
+//        f  = 2 -> 重複步驟
+// 2 2 2 3     --->  2 2 2 3
+//     s       --->      s

array/fase_slwo_pointer_27/target/.rustc_info.json

@@ -0,0 +1 @@
+{"rustc_fingerprint":13714326583451104423,"outputs":{"15729799797837862367":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/daniel/.rustup/toolchains/stable-aarch64-apple-darwin\noff\npacked\nunpacked\n___\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_abi=\"\"\ntarget_arch=\"aarch64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"aes\"\ntarget_feature=\"crc\"\ntarget_feature=\"dit\"\ntarget_feature=\"dotprod\"\ntarget_feature=\"dpb\"\ntarget_feature=\"dpb2\"\ntarget_feature=\"fcma\"\ntarget_feature=\"fhm\"\ntarget_feature=\"flagm\"\ntarget_feature=\"fp16\"\ntarget_feature=\"frintts\"\ntarget_feature=\"jsconv\"\ntarget_feature=\"lor\"\ntarget_feature=\"lse\"\ntarget_feature=\"neon\"\ntarget_feature=\"paca\"\ntarget_feature=\"pacg\"\ntarget_feature=\"pan\"\ntarget_feature=\"pmuv3\"\ntarget_feature=\"ras\"\ntarget_feature=\"rcpc\"\ntarget_feature=\"rcpc2\"\ntarget_feature=\"rdm\"\ntarget_feature=\"sb\"\ntarget_feature=\"sha2\"\ntarget_feature=\"sha3\"\ntarget_feature=\"ssbs\"\ntarget_feature=\"vh\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n","stderr":""},"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.78.0 (9b00956e5 2024-04-29)\nbinary: rustc\ncommit-hash: 9b00956e56009bab2aa15d7bff10916599e3d6d6\ncommit-date: 2024-04-29\nhost: aarch64-apple-darwin\nrelease: 1.78.0\nLLVM version: 18.1.2\n","stderr":""}},"successes":{}}

array/fase_slwo_pointer_27/target/CACHEDIR.TAG

@@ -0,0 +1,3 @@
+Signature: 8a477f597d28d172789f06886806bc55
+# This file is a cache directory tag created by cargo.
+# For information about cache directory tags see https://bford.info/cachedir/

array/fase_slwo_pointer_27/target/debug/.fingerprint/fase_slwo_pointer_27-a242af1aefb6edb9/bin-fase_slwo_pointer_27

@@ -0,0 +1 @@
+dd3a7bc4a9a96e30

array/fase_slwo_pointer_27/target/debug/.fingerprint/fase_slwo_pointer_27-a242af1aefb6edb9/bin-fase_slwo_pointer_27.json

@@ -0,0 +1 @@
+{"rustc":792111255936306319,"features":"[]","declared_features":"","target":7613876442669931328,"profile":14453530908159220714,"path":1684066648322511884,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"debug/.fingerprint/fase_slwo_pointer_27-a242af1aefb6edb9/dep-bin-fase_slwo_pointer_27"}}],"rustflags":[],"metadata":7797948686568424061,"config":2202906307356721367,"compile_kind":0}

array/fase_slwo_pointer_27/target/debug/.fingerprint/fase_slwo_pointer_27-a242af1aefb6edb9/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

array/fase_slwo_pointer_27/target/debug/deps/fase_slwo_pointer_27-a242af1aefb6edb9.d

@@ -0,0 +1,5 @@
+/Users/daniel/Documents/Rust/leetcode-rust/array/fase_slwo_pointer_27/target/debug/deps/fase_slwo_pointer_27-a242af1aefb6edb9: src/main.rs
+
+/Users/daniel/Documents/Rust/leetcode-rust/array/fase_slwo_pointer_27/target/debug/deps/fase_slwo_pointer_27-a242af1aefb6edb9.d: src/main.rs
+
+src/main.rs:

array/fase_slwo_pointer_27/target/debug/fase_slwo_pointer_27.d

@@ -0,0 +1 @@
+/Users/daniel/Documents/Rust/leetcode-rust/array/fase_slwo_pointer_27/target/debug/fase_slwo_pointer_27: /Users/daniel/Documents/Rust/leetcode-rust/array/fase_slwo_pointer_27/src/main.rs