Commit 0949a20

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Add solution to 523.

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Original file line number	Diff line number	Diff line change
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	`1`	`+/**`
	`2`	`+ * @param {number[]} nums`
	`3`	`+ * @param {number} k`
	`4`	`+ * @return {boolean}`
	`5`	`+ */`
	`6`	`+var checkSubarraySum = function (nums, k) {`
	`7`	`+ const map = {`
	`8`	`+ 0: 0,`
	`9`	`+ };`
	`10`	`+ let s = 0;`
	`11`	`+`
	`12`	`+ for (let i = 0; i < nums.length; i++) {`
	`13`	`+ s += nums[i];`
	`14`	`+ const r = s % k;`
	`15`	`+`
	`16`	`+ if (map[r] === undefined) {`
	`17`	`+ map[r] = i + 1;`
	`18`	`+ } else if (map[r] < i) {`
	`19`	`+ return true;`
	`20`	`+ }`
	`21`	`+ }`
	`22`	`+`
	`23`	`+ return false;`
	`24`	`+};`

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