Travis build: 807 [ci skip]

README.md

@@ -276,6 +276,15 @@
 
 </details>
 
+### _Uncategorized_
+
+<details>
+<summary>View contents</summary>
+
+* [`solveRPN`](#solverpn)
+
+</details>
+
 ---
  ## 🔌 Adapter
 
@@ -4848,6 +4857,60 @@ yesNo('Foo', true); // true
 
 <br>[⬆ Back to top](#table-of-contents)
 
+---
+ ## _Uncategorized_
+
+### solveRPN
+
+Solves the given mathematical expression in [reverse polish notation](https://en.wikipedia.org/wiki/Reverse_Polish_notation).
+Throws appropriate errors if there are unrecognized symbols or the expression is wrong.
+
+Use a dictionary, `OPERATORS` to specify each operator's matching mathematical operation.
+Use `String.replace()` with a regular expression to replace `^` with `**`, `String.split()` to tokenize the string and `Array.filter()` to remove empty tokens.
+Use `Array.forEach()` to parse each `symbol`, evaluate it as a numeric value or operator and solve the mathematical expression.
+Numeric values are converted to floating point numbers and pushed to a `stack`, while operators are evaluated using the `OPERATORS` dictionary and pop elements from the `stack` to apply operations.
+
+```js
+const solveRPN = rpn => {
+  const OPERATORS = {
+    '*': (a, b) => a * b,
+    '+': (a, b) => a + b,
+    '-': (a, b) => a - b,
+    '/': (a, b) => a / b,
+    '**': (a, b) => a ** b
+  };
+  const [stack, solve] = [
+    [],
+    rpn
+      .replace(/\^/g, '**')
+      .split(/\s+/g)
+      .filter(el => !/\s+/.test(el) && el !== '')
+  ];
+  solve.forEach(symbol => {
+    if (!isNaN(parseFloat(symbol)) && isFinite(symbol)) {
+      stack.push(symbol);
+    } else if (Object.keys(OPERATORS).includes(symbol)) {
+      const [a, b] = [stack.pop(), stack.pop()];
+      stack.push(OPERATORS[symbol](parseFloat(b), parseFloat(a)));
+    } else {
+      throw `${symbol} is not a recognized symbol`;
+    }
+  });
+  if (stack.length === 1) return stack.pop();
+  else throw `${rpn} is not a proper RPN. Please check it and try again`;
+};
+```
+
+```js
+solveRPN('15 7 1 1 + - / 3 * 2 1 1 + + -'); // 5
+solveRPN('3 5 6 + *'); //33
+solveRPN('2 4 / 5 6 - *'); //-0.5
+solveRPN('2 3 ^'); //8
+solveRPN('2 3 ^'); //8
+```
+
+<br>[⬆ back to top](#table-of-contents)
+
 
 ## Collaborators
 

snippets/solveRPN.md

@@ -8,21 +8,35 @@ Use `String.replace()` with a regular expression to replace `^` with `**`, `Stri
 Use `Array.forEach()` to parse each `symbol`, evaluate it as a numeric value or operator and solve the mathematical expression.
 Numeric values are converted to floating point numbers and pushed to a `stack`, while operators are evaluated using the `OPERATORS` dictionary and pop elements from the `stack` to apply operations.
 
-``` js
+```js
 const solveRPN = rpn => {
-  const OPERATORS = {'*' : (a,b) => a * b, '+' : (a,b) => a + b, '-' : (a,b) => a - b, '/' : (a,b) => a / b, '**': (a,b) => a ** b};
+  const OPERATORS = {
-  const [stack,solve] = [[],rpn.replace(/\^/g,'**').split(/\s+/g).filter(el => !/\s+/.test(el) && el !== '')];
+    '*': (a, b) => a * b,
+    '+': (a, b) => a + b,
+    '-': (a, b) => a - b,
+    '/': (a, b) => a / b,
+    '**': (a, b) => a ** b
+  };
+  const [stack, solve] = [
+    [],
+    rpn
+      .replace(/\^/g, '**')
+      .split(/\s+/g)
+      .filter(el => !/\s+/.test(el) && el !== '')
+  ];
   solve.forEach(symbol => {
-    if(!isNaN(parseFloat(symbol)) && isFinite(symbol)) {stack.push(symbol)}
+    if (!isNaN(parseFloat(symbol)) && isFinite(symbol)) {
-          else if (Object.keys(OPERATORS).includes(symbol)) {
+      stack.push(symbol);
-          const [a,b] = [stack.pop(),stack.pop()];
+    } else if (Object.keys(OPERATORS).includes(symbol)) {
-          stack.push(OPERATORS[symbol](parseFloat(b),parseFloat(a)))
+      const [a, b] = [stack.pop(), stack.pop()];
-        } else { throw `${symbol} is not a recognized symbol` }
+      stack.push(OPERATORS[symbol](parseFloat(b), parseFloat(a)));
-  }
+    } else {
-)
+      throw `${symbol} is not a recognized symbol`;
- if(stack.length === 1)  return stack.pop()
+    }
-  else  throw `${rpn} is not a proper RPN. Please check it and try again`
+  });
-}
+  if (stack.length === 1) return stack.pop();
+  else throw `${rpn} is not a proper RPN. Please check it and try again`;
+};
 ```
 
 ```js

tag_database

@@ -137,6 +137,7 @@ shuffle:array
 similarity:array
 size:object
 sleep:function
+solveRPN:uncategorized
 sortCharactersInString:string
 sortedIndex:array
 speechSynthesis:browser