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Update MemoizeII.js

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Original file line number	Diff line number	Diff line change
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`1`	`1`
	`2`	`+const RES = Symbol("result");`
	`3`	`+`
	`4`	`+/**`
	`5`	`+ * @param {Function} fn`
	`6`	`+ */`
	`7`	`+function memoize(fn) {`
	`8`	`+ const globalCache = new Map();`
	`9`	`+`
	`10`	`+ return (...params) => {`
	`11`	`+ let currentCache = globalCache;`
	`12`	`+ for(const param of params) {`
	`13`	`+ if (!currentCache.has(param)) {`
	`14`	`+ currentCache.set(param, new Map());`
	`15`	`+ }`
	`16`	`+ currentCache = currentCache.get(param);`
	`17`	`+ }`
	`18`	`+`
	`19`	`+ if (currentCache.has(RES)) return currentCache.get(RES);`
	`20`	`+`
	`21`	`+ const result = fn(...params);`
	`22`	`+`
	`23`	`+ currentCache.set(RES, result);`
	`24`	`+ return result;`
	`25`	`+ }`
	`26`	`+}`

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