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话题分类 > 前缀和

# 题目 标签 难度
2171 拿出最少数目的魔法豆 [数组] [前缀和] [排序] Medium
2145 统计隐藏数组数目 [数组] [前缀和] Medium
2132 用邮票贴满网格图 [贪心] [数组] [矩阵] [前缀和] Hard
2121 相同元素的间隔之和 [数组] [哈希表] [前缀和] Medium
2106 摘水果 [数组] [二分查找] [前缀和] [滑动窗口] Hard
2100 适合打劫银行的日子 [数组] [动态规划] [前缀和] Medium
2083 求以相同字母开头和结尾的子串总数 🔒 [哈希表] [数学] [字符串] [计数] [前缀和] Medium
2067 Number of Equal Count Substrings 🔒 [字符串] [计数] [前缀和] Medium
2055 蜡烛之间的盘子 [数组] [字符串] [二分查找] [前缀和] Medium
2025 分割数组的最多方案数 [数组] [哈希表] [计数] [枚举] [前缀和] Hard
2024 考试的最大困扰度 [字符串] [二分查找] [前缀和] [滑动窗口] Medium
2021 街上最亮的位置 🔒 [数组] [有序集合] [前缀和] Medium
2017 网格游戏 [数组] [矩阵] [前缀和] Medium
1991 找到数组的中间位置 [数组] [前缀和] Easy
1943 描述绘画结果 [数组] [前缀和] Medium
1930 长度为 3 的不同回文子序列 [哈希表] [字符串] [前缀和] Medium
1915 最美子字符串的数目 [位运算] [哈希表] [字符串] [前缀和] Medium
1895 最大的幻方 [数组] [矩阵] [前缀和] Medium
1894 找到需要补充粉笔的学生编号 [数组] [二分查找] [前缀和] [模拟] Medium
1893 检查是否区域内所有整数都被覆盖 [数组] [哈希表] [前缀和] Easy
1889 装包裹的最小浪费空间 [数组] [二分查找] [前缀和] [排序] Hard
1878 矩阵中最大的三个菱形和 [数组] [数学] [矩阵] [前缀和] [排序] [堆(优先队列)] Medium
1872 石子游戏 VIII [数组] [数学] [动态规划] [博弈] [前缀和] Hard
1871 跳跃游戏 VII [双指针] [字符串] [前缀和] Medium
1862 向下取整数对和 [数组] [数学] [二分查找] [前缀和] Hard
1856 子数组最小乘积的最大值 [] [数组] [前缀和] [单调栈] Medium
1838 最高频元素的频数 [数组] [二分查找] [前缀和] [滑动窗口] Medium
1829 每个查询的最大异或值 [位运算] [数组] [前缀和] Medium
1788 最大化花园的美观度 🔒 [贪心] [数组] [前缀和] Hard
1744 你能在你最喜欢的那天吃到你最喜欢的糖果吗? [数组] [前缀和] Medium
1738 找出第 K 大的异或坐标值 [位运算] [数组] [分治] [矩阵] [前缀和] [快速选择] [堆(优先队列)] Medium
1737 满足三条件之一需改变的最少字符数 [哈希表] [字符串] [计数] [前缀和] Medium
1732 找到最高海拔 [数组] [前缀和] Easy
1712 将数组分成三个子数组的方案数 [数组] [双指针] [二分查找] [前缀和] Medium
1703 得到连续 K 个 1 的最少相邻交换次数 [贪心] [数组] [前缀和] [滑动窗口] Hard
1685 有序数组中差绝对值之和 [数组] [数学] [前缀和] Medium
1674 使数组互补的最少操作次数 [数组] [哈希表] [前缀和] Medium
1658 将 x 减到 0 的最小操作数 [数组] [哈希表] [二分查找] [前缀和] [滑动窗口] Medium
1590 使数组和能被 P 整除 [数组] [哈希表] [前缀和] Medium
1589 所有排列中的最大和 [贪心] [数组] [前缀和] [排序] Medium
1588 所有奇数长度子数组的和 [数组] [数学] [前缀和] Easy
1546 和为目标值且不重叠的非空子数组的最大数目 [贪心] [数组] [哈希表] [前缀和] Medium
1524 和为奇数的子数组数目 [数组] [数学] [动态规划] [前缀和] Medium
1480 一维数组的动态和 [数组] [前缀和] Easy
1442 形成两个异或相等数组的三元组数目 [位运算] [数组] [哈希表] [数学] [前缀和] Medium
1423 可获得的最大点数 [数组] [前缀和] [滑动窗口] Medium
1413 逐步求和得到正数的最小值 [数组] [前缀和] Easy
1371 每个元音包含偶数次的最长子字符串 [位运算] [哈希表] [字符串] [前缀和] Medium
1314 矩阵区域和 [数组] [矩阵] [前缀和] Medium
1310 子数组异或查询 [位运算] [数组] [前缀和] Medium
1292 元素和小于等于阈值的正方形的最大边长 [数组] [二分查找] [矩阵] [前缀和] Medium
1208 尽可能使字符串相等 [字符串] [二分查找] [前缀和] [滑动窗口] Medium
1177 构建回文串检测 [位运算] [哈希表] [字符串] [前缀和] Medium
1124 表现良好的最长时间段 [] [数组] [哈希表] [前缀和] [单调栈] Medium
1109 航班预订统计 [数组] [前缀和] Medium
1094 拼车 [数组] [前缀和] [排序] [模拟] [堆(优先队列)] Medium
1074 元素和为目标值的子矩阵数量 [数组] [哈希表] [矩阵] [前缀和] Hard
1004 最大连续1的个数 III [数组] [二分查找] [前缀和] [滑动窗口] Medium
995 K 连续位的最小翻转次数 [位运算] [数组] [前缀和] [滑动窗口] Hard
974 和可被 K 整除的子数组 [数组] [哈希表] [前缀和] Medium
930 和相同的二元子数组 [数组] [哈希表] [前缀和] [滑动窗口] Medium
862 和至少为 K 的最短子数组 [队列] [数组] [二分查找] [前缀和] [滑动窗口] [单调队列] [堆(优先队列)] Hard
798 得分最高的最小轮调 [数组] [前缀和] Hard
724 寻找数组的中心下标 [数组] [前缀和] Easy
560 和为 K 的子数组 [数组] [哈希表] [前缀和] Medium
548 将数组分割成和相等的子数组 🔒 [数组] [前缀和] Hard
528 按权重随机选择 [数学] [二分查找] [前缀和] [随机化] Medium
525 连续数组 [数组] [哈希表] [前缀和] Medium
523 连续的子数组和 [数组] [哈希表] [数学] [前缀和] Medium
497 非重叠矩形中的随机点 [水塘抽样] [数学] [二分查找] [有序集合] [前缀和] [随机化] Medium
370 区间加法 🔒 [数组] [前缀和] Medium
304 二维区域和检索 - 矩阵不可变 [设计] [数组] [矩阵] [前缀和] Medium
303 区域和检索 - 数组不可变 [设计] [数组] [前缀和] Easy
238 除自身以外数组的乘积 [数组] [前缀和] Medium
209 长度最小的子数组 [数组] [二分查找] [前缀和] [滑动窗口] Medium