25 lines
568 B
Markdown
25 lines
568 B
Markdown
### RPNSolver
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Solves the given reverse polish notation
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```js
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const RPNSolver = RPN => {
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const isNumeric = str => !isNaN(parseFloat(str)) && isFinite(str);
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const isOperator = str => ['*','-','+','/','**'].includes(str)
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let stack = [];
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let solve = RPN.replace(/\^/g,'**').split(/\s+/g);
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solve.forEach(symbol => {
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isNumeric(symbol) ? stack.push(symbol) :
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isOperator(symbol) ?
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(a = stack.pop(),
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b = stack.pop(),
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stack.push(eval(a + symbol + b))) : Console.log('Wrong RPN')
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}
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)
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return stack.pop()
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}
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```
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```js
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```
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