1582. 二进制矩阵中的特殊位置

src/main.rs

@@ -1,48 +1,57 @@
-use std::cell::RefCell;
-
 struct Solution;
 mod arr;
 impl Solution {
-    pub fn find_kth_bit(n: i32,mut k: i32) -> char {
-        let len = Self::get_length_arr()(n);
-        if n == 1 || k == 0 {
-            return '0';
-        }
-        if k == len / 2 + 1 {
-            return '1';
-        }
-        if k > len / 2 + 1 {
-            if Self::find_kth_bit(n - 1, (len / 2+1) - (k - (len / 2 + 1))) == '1' {
-                '0'
-            } else {
-                '1'
-            }
-        } else {
-            Self::find_kth_bit(n - 1, k)
-        }
-    }
-    fn get_length_arr() -> impl Fn(i32) -> i32 {
-        let cell = RefCell::new(None);
-        move |n| {
-            let mut value = cell.borrow_mut();
-            if value.is_none() {
-                let mut arr = Vec::with_capacity(20);
-                arr.push(1);
-                for _ in 1..20 {
-                    arr.push(arr[arr.len() - 1] * 2 + 1);
+    pub fn num_special(mat: Vec<Vec<i32>>) -> i32 {
+        let mut disable = vec![false; mat[0].len()];
+        let mut arr = vec![0; mat[0].len()];
+        for i in 0..mat.len() {
+            let mut disable_i = false;
+            let mut next_do_disable = false;
+            let mut last_index = 1000_usize;
+            for j in 0..mat[0].len() {
+                if mat[i][j] == 1 {
+                    if next_do_disable {
+                        disable_i = true;
+                        arr[last_index] = 0;
+                        disable[last_index] = true;
+                        disable[j] = true;
+                        arr[j] = 0;
+                    }
+                    if disable[j] {
+                        disable_i = true;
+                        continue;
+                    }
+                    if disable_i {
+                        disable[j] = true;
+                        if arr[j] != 0 {
+                            arr[j] = 0;
+                        }
+                        continue;
+                    }
+                    if arr[j] != 0 {
+                        disable[j] = true;
+                        arr[j] = 0;
+                        disable_i = true;
+                        continue
+                    }
+                    arr[j] += 1;
+                    next_do_disable = true;
+                    last_index = j;
                 }
-                *value = Some(arr);
-            }
-            if let Some(x) = value.as_ref() {
-                x[n as usize - 1]
-            } else {
-                0
             }
         }
+        arr.iter().sum()
     }
 }
 
 fn main() {
-    let result = Solution::find_kth_bit(4, 14);
+    let result = Solution::num_special(arr::make_matrix("[[0,0,0,0,0,0],[0,0,1,0,0,0],[0,0,0,0,1,0],[0,0,0,0,0,0],[0,0,1,0,0,1],[0,0,0,0,0,0],[0,0,0,0,0,0]]"));
     println!("{:?}", result);
 }
+// [[0,0,0,0,0,0],
+//  [0,0,1,0,0,0],
+//  [0,0,0,0,1,0],
+//  [0,0,0,0,0,0],
+//  [0,0,1,0,0,1],
+//  [0,0,0,0,0,0],
+//  [0,0,0,0,0,0]]