feat: update readme.md

Author: KiritoEM

README.md

@@ -67,9 +67,9 @@ boolean-table expression "(a -> ~b) == (b | a)" --step
 ```bash
 # Truth table for (a -> ~b) == (b | a) by printing subexpressions
  | a    | b    | ~b    | (a -> ~b) | (b | a) | (a -> ~b) == (b | a) |
- |------|------|-------|-----------|----|----|----------------------|
- | 0    | 0    | 1     | 1         | 0  | 0  | 0                    |
- | 0    | 1    | 0     | 1         | 1  | 1  | 1                    |
- | 1    | 0    | 1     | 1         | 1  | 1  | 1                    |
- | 1    | 1    | 0     | 0         | 1  | 0  | 0                    |
+ |------|------|-------|-----------|---------|----------------------|
+ | 0    | 0    | 1     | 1         | 0       | 0                    |
+ | 0    | 1    | 0     | 1         | 1       | 1                    |
+ | 1    | 0    | 1     | 1         | 1       | 1                    |
+ | 1    | 1    | 0     | 0         | 1       | 0                    |
 ```

src/booleanTable/index.ts

@@ -107,10 +107,6 @@ class BooleanTable implements IBooleanTable {
         let header = allExpressions.map((exp, idx) => {
             return exp.padEnd(columnWidths[idx]);
         })
-            .map((exp) => (
-                ["|", "&", "->", "==", "~"].some((op) => exp.includes(op)) && exp !== this.input ?
-                    `(${exp})` : exp
-            ))
             .join("    |    ");
 
         console.log(header);