feat: update solutions to lc problems: No.433,2486 (#3020)

Author: yanglbme

solution/0300-0399/0393.UTF-8 Validation/README.md

@@ -215,23 +215,23 @@ function validUtf8(data: number[]): boolean {
     let cnt = 0;
     for (const v of data) {
         if (cnt > 0) {
-            if (v >> 6 != 0b10) {
+            if (v >> 6 !== 0b10) {
                 return false;
             }
             --cnt;
-        } else if (v >> 7 == 0) {
+        } else if (v >> 7 === 0) {
             cnt = 0;
-        } else if (v >> 5 == 0b110) {
+        } else if (v >> 5 === 0b110) {
             cnt = 1;
-        } else if (v >> 4 == 0b1110) {
+        } else if (v >> 4 === 0b1110) {
             cnt = 2;
-        } else if (v >> 3 == 0b11110) {
+        } else if (v >> 3 === 0b11110) {
             cnt = 3;
         } else {
             return false;
         }
     }
-    return cnt == 0;
+    return cnt === 0;
 }
 ```
 

solution/0300-0399/0393.UTF-8 Validation/README_EN.md

@@ -213,23 +213,23 @@ function validUtf8(data: number[]): boolean {
     let cnt = 0;
     for (const v of data) {
         if (cnt > 0) {
-            if (v >> 6 != 0b10) {
+            if (v >> 6 !== 0b10) {
                 return false;
             }
             --cnt;
-        } else if (v >> 7 == 0) {
+        } else if (v >> 7 === 0) {
             cnt = 0;
-        } else if (v >> 5 == 0b110) {
+        } else if (v >> 5 === 0b110) {
             cnt = 1;
-        } else if (v >> 4 == 0b1110) {
+        } else if (v >> 4 === 0b1110) {
             cnt = 2;
-        } else if (v >> 3 == 0b11110) {
+        } else if (v >> 3 === 0b11110) {
             cnt = 3;
         } else {
             return false;
         }
     }
-    return cnt == 0;
+    return cnt === 0;
 }
 ```