原文链接: https://leetcode-cn.com/problems/check-if-n-and-its-double-exist
英文原文Given an array arr of integers, check if th
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原文链接: https://leetcode-cn.com/problems/tweet-counts-per-frequency
英文原文A social media company is trying to monitor acti
原文链接: https://leetcode-cn.com/problems/count-negative-numbers-in-a-sorted-matrix
英文原文Given a m x n matrix grid which i
原文链接: https://leetcode-cn.com/problems/find-the-distance-value-between-two-arrays
英文原文Given two integer arrays arr1 an
原文链接: https://leetcode-cn.com/problems/find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows
英文原文You are given an&nbs
原文链接: https://leetcode-cn.com/problems/minimum-number-of-days-to-make-m-bouquets
英文原文Given an integer array bloomDay,
原文链接: https://leetcode-cn.com/problems/avoid-flood-in-the-city
英文原文Your country has an infinite number of lakes. Initi
原文链接: https://leetcode-cn.com/problems/range-sum-of-sorted-subarray-sums
英文原文You are given the array nums consisting o
原文链接: https://leetcode-cn.com/problems/number-of-subsequences-that-satisfy-the-given-sum-condition
英文原文Given an array
原文链接: https://leetcode-cn.com/problems/kth-missing-positive-number
英文原文Given an array arr of positive integers&nb