leetcode.cn 2026-09-11
🟢3483.unique-3-digit-even-numbers
🏷️ Tags
#recursion #array #hash_table #enumeration
🟢3483.unique-3-digit-even-numbers
🏷️ Tags
#recursion #array #hash_table #enumeration
Telegraph
unique-3-digit-even-numbers
给你一个数字数组 digits,你需要从中选择三个数字组成一个三位偶数,你的任务是求出 不同 三位偶数的数量。 注意:每个数字在三位偶数中都只能使用 一次 ,并且 不能 有前导零。 示例 1: 输入: digits = [1,2,3,4] 输出: 12 解释: 可以形成的 12 个不同的三位偶数是 124,132,134,142,214,234,312,314,324,342,412 和 432。注意,不能形成 222,因为数字 2 只有一个。 示例 2: 输入: digits = [0,2,2] 输出:…
leetcode.com 2026-09-11
🟢3483.unique-3-digit-even-numbers
🏷️ Tags
#recursion #array #hash_table #enumeration
🟢3483.unique-3-digit-even-numbers
🏷️ Tags
#recursion #array #hash_table #enumeration
Telegraph
unique-3-digit-even-numbers
You are given an array of digits called digits. Your task is to determine the number of distinct three-digit even numbers that can be formed using these digits. Note: Each copy of a digit can only be used once per number, and there may not be leading zeros.…
leetcode.cn 2026-09-12
🔴3414.maximum-score-of-non-overlapping-intervals
🏷️ Tags
#array #binary_search #dynamic_programming #sorting
🔴3414.maximum-score-of-non-overlapping-intervals
🏷️ Tags
#array #binary_search #dynamic_programming #sorting
Telegraph
maximum-score-of-non-overlapping-intervals
给你一个二维整数数组 intervals,其中 intervals[i] = [li, ri, weighti]。区间 i 的起点为 li,终点为 ri,权重为 weighti。你最多可以选择 4 个互不重叠 的区间。所选择区间的 得分 定义为这些区间权重的总和。 返回一个至多包含 4 个下标且 字典序最小 的数组,表示从 intervals 中选中的互不重叠且得分最大的区间。
leetcode.com 2026-09-12
🔴3414.maximum-score-of-non-overlapping-intervals
🏷️ Tags
#array #binary_search #dynamic_programming #sorting
🔴3414.maximum-score-of-non-overlapping-intervals
🏷️ Tags
#array #binary_search #dynamic_programming #sorting
Telegraph
maximum-score-of-non-overlapping-intervals
You are given a 2D integer array intervals, where intervals[i] = [li, ri, weighti]. Interval i starts at position li and ends at ri, and has a weight of weighti. You can choose up to 4 non-overlapping intervals. The score of the chosen intervals is defined…
leetcode.cn 2026-09-17
🟡1477.find-two-non-overlapping-sub-arrays-each-with-target-sum
🏷️ Tags
#array #hash_table #binary_search #dynamic_programming #sliding_window
🟡1477.find-two-non-overlapping-sub-arrays-each-with-target-sum
🏷️ Tags
#array #hash_table #binary_search #dynamic_programming #sliding_window
Telegraph
find-two-non-overlapping-sub-arrays-each-with-target-sum
给你一个整数数组 arr 和一个整数值 target 。 请你在 arr 中找 两个互不重叠的子数组 且它们的和都等于 target 。可能会有多种方案,请你返回满足要求的两个子数组长度和的 最小值 。 请返回满足要求的最小长度和,如果无法找到这样的两个子数组,请返回 -1 。 示例 1: 输入:arr = [3,2,2,4,3], target = 3 输出:2 解释:只有两个子数组和为 3 ([3] 和 [3])。它们的长度和为 2 。 示例 2: 输入:arr = [7,3,4,7], target…
leetcode.com 2026-09-17
🟡1477.find-two-non-overlapping-sub-arrays-each-with-target-sum
🏷️ Tags
#array #hash_table #binary_search #dynamic_programming #sliding_window
🟡1477.find-two-non-overlapping-sub-arrays-each-with-target-sum
🏷️ Tags
#array #hash_table #binary_search #dynamic_programming #sliding_window
Telegraph
find-two-non-overlapping-sub-arrays-each-with-target-sum
You are given an array of integers arr and an integer target. You have to find two non-overlapping sub-arrays of arr each with a sum equal target. There can be multiple answers so you have to find an answer where the sum of the lengths of the two sub-arrays…