Examples include women being invited for a mammogram to look for breast cancer or the at-home bowel cancer test posted to the home of everyone over the age of 50, every two years.
思路：先对 nums2 用单调栈求每个元素的下一个更大值，存入 Map 缓存；再遍历 nums1 直接查 Map 得结果。时间复杂度 O(len1 + len2)。
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for (let num of nums1) {
一边是价格赶超大城市的蛋糕、米面、咖啡，另一边是月薪两三千、理货员岗位都要抢破头。