Commit a13b74e

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Create Memoize

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	`1`	`+/**`
	`2`	`+ * @param {Function} fn`
	`3`	`+ */`
	`4`	`+/*`
	`5`	`+Example 1:`
	`6`	`+`
	`7`	`+Input`
	`8`	`+"sum"`
	`9`	`+["call","call","getCallCount","call","getCallCount"]`
	`10`	`+[[2,2],[2,2],[],[1,2],[]]`
	`11`	`+Output`
	`12`	`+[4,4,1,3,2]`
	`13`	`+*/`
	`14`	`+function memoize(fn) {`
	`15`	`+ const cache = {};`
	`16`	`+ return function(...args) {`
	`17`	`+ const key = JSON.stringify(args);`
	`18`	`+ if(key in cache){`
	`19`	`+ return cache[key];`
	`20`	`+ }`
	`21`	`+ const result = fn.apply(this, args);`
	`22`	`+ cache[key] = result;`
	`23`	`+`
	`24`	`+ return result;`
	`25`	`+ }`
	`26`	`+}`
	`27`	`+`
	`28`	`+`
	`29`	`+/**`
	`30`	`+ * let callCount = 0;`
	`31`	`+ * const memoizedFn = memoize(function (a, b) {`
	`32`	`+ * callCount += 1;`
	`33`	`+ * return a + b;`
	`34`	`+ * })`
	`35`	`+ * memoizedFn(2, 3) // 5`
	`36`	`+ * memoizedFn(2, 3) // 5`
	`37`	`+ * console.log(callCount) // 1`
	`38`	`+ */`

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