feat: add solutions to lc problems: No.3383,3384 (#3850)

Author: yanglbme

solution/1800-1899/1812.Determine Color of a Chessboard Square/README.md

@@ -72,7 +72,7 @@ tags:
 
 观察棋盘我们发现，颜色相同的两个格子 $(x_1, y_1)$ 和 $(x_2, y_2)$ 满足 $x_1 + y_1$ 和 $x_2 + y_2$ 均为奇数或偶数。
 
-因此，我们可以根据 `coordinates` 获取对应的坐标 $(x, y)$，如果 $x + y$ 为奇数，则格子为白色，返回 `true`，否则返回 `false`。
+因此，我们可以根据 $\textit{coordinates}$ 获取对应的坐标 $(x, y)$，如果 $x + y$ 为奇数，则格子为白色，返回 $\textit{true}$，否则返回 $\textit{false}$。
 
 时间复杂度 $O(1)$，空间复杂度 $O(1)$。
 
@@ -142,9 +142,7 @@ impl Solution {
  * @return {boolean}
  */
 var squareIsWhite = function (coordinates) {
-    const x = coordinates.charAt(0).charCodeAt();
-    const y = coordinates.charAt(1).charCodeAt();
-    return (x + y) % 2 == 1;
+    return (coordinates[0].charCodeAt() + coordinates[1].charCodeAt()) % 2 == 1;
 };
 ```
 

solution/1800-1899/1812.Determine Color of a Chessboard Square/README_EN.md

@@ -66,11 +66,11 @@ tags:
 
 <!-- solution:start -->
 
-### Solution 1: Find the Pattern
+### Solution 1: Pattern Recognition
 
-By observing the chessboard, we find that two squares $(x_1, y_1)$ and $(x_2, y_2)$ with the same color satisfy that both $x_1 + y_1$ and $x_2 + y_2$ are either odd or even.
+Observing the chessboard, we find that two squares $(x_1, y_1)$ and $(x_2, y_2)$ with the same color satisfy that both $x_1 + y_1$ and $x_2 + y_2$ are either odd or even.
 
-Therefore, we can get the corresponding coordinates $(x, y)$ from `coordinates`. If $x + y$ is odd, then the square is white, return `true`, otherwise return `false`.
+Therefore, we can get the corresponding coordinates $(x, y)$ from $\textit{coordinates}$. If $x + y$ is odd, the square is white, and we return $\textit{true}$; otherwise, we return $\textit{false}$.
 
 The time complexity is $O(1)$, and the space complexity is $O(1)$.
 
@@ -140,9 +140,7 @@ impl Solution {
  * @return {boolean}
  */
 var squareIsWhite = function (coordinates) {
-    const x = coordinates.charAt(0).charCodeAt();
-    const y = coordinates.charAt(1).charCodeAt();
-    return (x + y) % 2 == 1;
+    return (coordinates[0].charCodeAt() + coordinates[1].charCodeAt()) % 2 == 1;
 };
 ```
 

solution/1800-1899/1812.Determine Color of a Chessboard Square/Solution.js

@@ -3,7 +3,5 @@
  * @return {boolean}
  */
 var squareIsWhite = function (coordinates) {
-    const x = coordinates.charAt(0).charCodeAt();
-    const y = coordinates.charAt(1).charCodeAt();
-    return (x + y) % 2 == 1;
+    return (coordinates[0].charCodeAt() + coordinates[1].charCodeAt()) % 2 == 1;
 };

solution/1800-1899/1891.Cutting Ribbons/README_EN.md

@@ -33,7 +33,7 @@ tags:
 
 </ul>
 
-<p>Your task is to determine the <strong>maximum</strong> length of ribbon, <code>x</code>, that allows you to cut <em>exactly</em> <code>k</code> ribbons, each of length <code>x</code>. You can discard any leftover ribbon from the cuts. If it is <strong>impossible</strong> to cut <code>k</code> ribbons of the same length, return 0.</p>
+<p>Your task is to determine the <strong>maximum</strong> length of ribbon, <code>x</code>, that allows you to cut <em>at least</em> <code>k</code> ribbons, each of length <code>x</code>. You can discard any leftover ribbon from the cuts. If it is <strong>impossible</strong> to cut <code>k</code> ribbons of the same length, return 0.</p>
 
 <p>&nbsp;</p>
 <p><strong class="example">Example 1:</strong></p>

solution/2500-2599/2557.Maximum Number of Integers to Choose From a Range II/README_EN.md

@@ -46,7 +46,7 @@ tags:
 <strong>Input:</strong> banned = [4,3,5,6], n = 7, maxSum = 18
 <strong>Output:</strong> 3
 <strong>Explanation:</strong> You can choose the integers 1, 2, and 7.
-All these integers are in the range [1, 7], all do not appear in banned, and their sum is 18, which does not exceed maxSum.
+All these integers are in the range [1, 7], all do not appear in banned, and their sum is 10, which does not exceed maxSum.
 </pre>
 
 <p>&nbsp;</p>