update: add literature reference

gaurovgiri · gaurovgiri · commit ed1b831fe054 · 2023-10-05T14:16:28.000+05:45
diff --git a/Data-Structures/Stack/EvaluateExpression.js b/Data-Structures/Stack/EvaluateExpression.js
@@ -1,6 +1,7 @@
 /**
  * Evaluate a numeric operations string using a stack.
  * Supports basic arithmetic operations: +, -, *, /
+ * Literature reference: https://www.geeksforgeeks.org/evaluation-of-postfix-expression/
  *
  * @param {string} expression - Numeric operations expression to evaluate.
  * @returns {number|null} - Result of the expression evaluation, or null if the expression is invalid.

Original file line number	Diff line number	Diff line change
`@@ -1,6 +1,7 @@`
`1`	`1`	`/**`
`2`	`2`	`* Evaluate a numeric operations string using a stack.`
`3`	`3`	`* Supports basic arithmetic operations: +, -, *, /`
	`4`	`+ * Literature reference: https://www.geeksforgeeks.org/evaluation-of-postfix-expression/`
`4`	`5`	`*`
`5`	`6`	`* @param {string} expression - Numeric operations expression to evaluate.`
`6`	`7`	`* @returns {number\|null} - Result of the expression evaluation, or null if the expression is invalid.`