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Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.
Example:
Input: nums = [2,7,11,15], target = 9
Output: [0,1]Constraints:
2 <= nums.length <= 10^4
-10^9 <= nums[i] <= 10^9
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Given an array of intervals where intervals[i] = [start_i, end_i], merge all overlapping intervals, and return an array of the non-overlapping intervals that cover all the intervals in the input.
Input: [[1,3],[2,6],[8,10],[15,18]]
Output: [[1,6],[8,10],[15,18]]Start free, upgrade when you're ready. No hidden fees.
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