diff --git a/Evaluate-Reverse-Polish-Notation/README.md b/Evaluate-Reverse-Polish-Notation/README.md
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+# Evaluate Reverse Polish Notation
+
+Write a method called `evalRPN` that evaluates the value of an arithmetic expression in Reverse Polish Notation.
+
+Valid operators are +, -, \*, /. Each operand may be an integer or another expression.
+
+Notes:
+
+- Division between two integers should truncate toward zero (negative numbers should be rounded towards zero, and positive numbers should be rounded towards zero)
+- The given RPN expression is always valid. That means the expression would always evaluate to a result and there won't be any divide by zero operation.
+- [Link to Wikipedia's explanation on Reverse Polish Notation](https://en.wikipedia.org/wiki/Reverse_Polish_notation)
+
+Example:
+
+```js
+Input:  ["2", "1", "+", "3", "*"];
+Output: 9;
+Explanation: ((2 + 1) * 3) = 9
+```
+
+```js
+Input: ["4", "13", "5", "/", "+"];
+Output: 6;
+Explanation: (4 + (13 / 5)) = 6
+```
+
+```js
+Input: ["10", "6", "9", "3", "+", "-11", "*", "/", "*", "17", "+", "5", "+"]
+Output: 22
+Explanation:
+  ((10 * (6 / ((9 + 3) * -11))) + 17) + 5
+= ((10 * (6 / (12 * -11))) + 17) + 5
+= ((10 * (6 / -132)) + 17) + 5
+= ((10 * 0) + 17) + 5
+= (0 + 17) + 5
+= 17 + 5
+= 22
+```
+
+Companies that have asked this question: -
diff --git a/Evaluate-Reverse-Polish-Notation/index.js b/Evaluate-Reverse-Polish-Notation/index.js
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+function evalRPN(tokens) {
+
+}
+
+module.exports = {
+  evalRPN
+}
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diff --git a/Evaluate-Reverse-Polish-Notation/index.test.js b/Evaluate-Reverse-Polish-Notation/index.test.js
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+const {
+  evalRPN
+} = require('./index');
+
+describe("evalRPN", () => {
+  it("Returns an integer", () => {
+    const tokens = ["2", "1", "+", "3", "*"]
+    const result = evalRPN(tokens);
+    expect(typeof (result)).toBe('number');
+  });
+
+  it("Truncates division between two integers toward zero when negative", () => {
+    const tokens = ["2", "-123", "/"];
+    const result = evalRPN(tokens);
+    expect(result).toEqual(0);
+  })
+
+  it("Truncates division between two integers toward zero when positive", () => {
+    const tokens = ["4", "3", "/"];
+    const result = evalRPN(tokens);
+    expect(result).toEqual(1);
+  });
+
+  it("Evaluates correctly for ['2', '1', '+', '3', '*']", () => {
+    const tokens = ["2", "1", "+", "3", "*"];
+    const result = evalRPN(tokens);
+    expect(result).toEqual(9)
+  })
+
+  it("Evaluates correctly for ['4', '13', '5', '/', '+']", () => {
+    const tokens = ["4", "13", "5", "/", "+"];
+    const result = evalRPN(tokens);
+    expect(result).toEqual(6)
+  })
+
+  it("Evaluates correctly for ['10', '6', '9', '3', '+', '-11', '*', '/', '*', '17', '+', '5', '+']", () => {
+    const tokens = ["10", "6", "9", "3", "+", "-11", "*", "/", "*", "17", "+", "5", "+"];
+    const result = evalRPN(tokens);
+    expect(result).toEqual(22)
+  });
+
+  it("Returns integer if tokens have length of 1", () => {
+    const tokens = ["13"];
+    const result = evalRPN(tokens);
+    expect(result).toEqual(13);
+  })
+})
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diff --git a/Evaluate-Reverse-Polish-Notation/solution.js b/Evaluate-Reverse-Polish-Notation/solution.js
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+function evalRPN(tokens) {
+  let stack = [];
+  let total;
+  let operators = {
+    "+": function (a, b) {
+      return a + b
+    },
+    "-": function (a, b) {
+      return a - b
+    },
+    "*": function (a, b) {
+      return a * b
+    },
+    "/": function (a, b) {
+      let number = a / b
+      let quotient = Math[number < 0 ? 'ceil' : 'floor'](number);
+      if (quotient === -0) {
+        return 0
+      } else {
+        return quotient
+      }
+    }
+  }
+
+  if (tokens.length === 1) {
+    return parseInt(tokens[0]);
+  }
+  for (let i = 0; i < tokens.length; i++) {
+    if (tokens[i] in operators) {
+      let second = stack.pop();
+      let first = stack.pop();
+      let amount = operators[tokens[i]](first, second);
+      stack.push(amount);
+    } else {
+      stack.push(parseInt(tokens[i]));
+    }
+  }
+  return stack.pop();
+};
+
+module.exports = {
+  evalRPN
+}
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