24 lines
508 B
JavaScript
24 lines
508 B
JavaScript
/**
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* @param nums: a continuous stream of numbers
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* @param number: a number
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* @return: returns the first unique number
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*/
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export const firstUniqueNumber = function (nums, number) {
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const due = new Set()
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const queue = new Set()
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for (const n of nums) {
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if (queue.has(n)) {
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queue.delete(n)
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due.add(n)
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} else if (!due.has(n)) {
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queue.add(n)
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}
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if (n === number) break
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}
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if (!due.has(number) && !queue.has(number)) return -1
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return Array.from(queue)[0] || -1
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}
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