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Merge pull requestneetcode-gh#3735 from dmgodoy/feat/memoize-js

Create 2623-memoize.js

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	`1`	`+/**`
	`2`	`+ *@param {Function} fn`
	`3`	`+ *@return {Function}`
	`4`	`+ */`
	`5`	`+functionmemoize(fn){`
	`6`	`+letmemo={};`
	`7`	`+returnfunction(...args){`
	`8`	`+letargsjson=JSON.stringify(args);`
	`9`	`+if(memo.hasOwnProperty(argsjson))`
	`10`	`+returnmemo[argsjson];`
	`11`	`+returnmemo[argsjson]=fn(...args);`
	`12`	`+}`
	`13`	`+}`
	`14`	`+`
	`15`	`+/**`
	`16`	`+ * let callCount = 0;`
	`17`	`+ * const memoizedFn = memoize(function (a, b) {`
	`18`	`+ * callCount += 1;`
	`19`	`+ * return a + b;`
	`20`	`+ * })`
	`21`	`+ * memoizedFn(2, 3) // 5`
	`22`	`+ * memoizedFn(2, 3) // 5`
	`23`	`+ * console.log(callCount) // 1`
	`24`	`+ */`

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