leetcode.cn 2026-09-23
🟡1658.minimum-operations-to-reduce-x-to-zero
🏷️ Tags
#array #hash_table #binary_search #prefix_sum #sliding_window
🟡1658.minimum-operations-to-reduce-x-to-zero
🏷️ Tags
#array #hash_table #binary_search #prefix_sum #sliding_window
Telegraph
minimum-operations-to-reduce-x-to-zero
给你一个整数数组 nums 和一个整数 x 。每一次操作时,你应当移除数组 nums 最左边或最右边的元素,然后从 x 中减去该元素的值。请注意,需要 修改 数组以供接下来的操作使用。 如果可以将 x 恰好 减到 0 ,返回 最小操作数 ;否则,返回 -1 。 示例 1: 输入:nums = [1,1,4,2,3], x = 5 输出:2 解释:最佳解决方案是移除后两个元素,将 x 减到 0 。 示例 2: 输入:nums = [5,6,7,8,9], x = 4 输出:-1 示例 3: 输入:nums…
leetcode.com 2026-09-23
🟡1658.minimum-operations-to-reduce-x-to-zero
🏷️ Tags
#array #hash_table #binary_search #prefix_sum #sliding_window
🟡1658.minimum-operations-to-reduce-x-to-zero
🏷️ Tags
#array #hash_table #binary_search #prefix_sum #sliding_window
Telegraph
minimum-operations-to-reduce-x-to-zero
You are given an integer array nums and an integer x. In one operation, you can either remove the leftmost or the rightmost element from the array nums and subtract its value from x. Note that this modifies the array for future operations. Return the minimum…
leetcode.com 2026-09-26
🟡1807.evaluate-the-bracket-pairs-of-a-string
🏷️ Tags
#array #hash_table #string
🟡1807.evaluate-the-bracket-pairs-of-a-string
🏷️ Tags
#array #hash_table #string
Telegraph
evaluate-the-bracket-pairs-of-a-string
You are given a string s that contains some bracket pairs, with each pair containing a non-empty key.
leetcode.cn 2026-09-29
🔴2267.check-if-there-is-a-valid-parentheses-string-path
🏷️ Tags
#array #dynamic_programming #matrix #bracket_sequences
🔴2267.check-if-there-is-a-valid-parentheses-string-path
🏷️ Tags
#array #dynamic_programming #matrix #bracket_sequences
Telegraph
check-if-there-is-a-valid-parentheses-string-path
一个括号字符串是一个 非空 且只包含 '(' 和 ')' 的字符串。如果下面 任意 条件为 真 ,那么这个括号字符串就是 合法的 。
leetcode.com 2026-09-29
🔴2267.check-if-there-is-a-valid-parentheses-string-path
🏷️ Tags
#array #dynamic_programming #matrix #bracket_sequences
🔴2267.check-if-there-is-a-valid-parentheses-string-path
🏷️ Tags
#array #dynamic_programming #matrix #bracket_sequences
Telegraph
check-if-there-is-a-valid-parentheses-string-path
A parentheses string is a non-empty string consisting only of '(' and ')'. It is valid if any of the following conditions is true:
leetcode.cn 2026-10-10
🟡2333.minimum-sum-of-squared-difference
🏷️ Tags
#greedy #array #binary_search #sorting #heap_priority_queue
🟡2333.minimum-sum-of-squared-difference
🏷️ Tags
#greedy #array #binary_search #sorting #heap_priority_queue
Telegraph
minimum-sum-of-squared-difference
给你两个下标从 0 开始的整数数组 nums1 和 nums2 ,长度为 n 。 数组 nums1 和 nums2 的 差值平方和 定义为所有满足 0 <= i < n 的 (nums1[i] - nums2[i])2 之和。 同时给你两个正整数 k1 和 k2 。你可以将 nums1 中的任意元素 +1 或者 -1 至多 k1 次。类似的,你可以将 nums2 中的任意元素 +1 或者 -1 至多 k2 次。 请你返回修改数组 nums1 至多 k1 次且修改数组 nums2 至多 k2 次后的最小 差值平方和 。…
leetcode.com 2026-10-10
🟡2333.minimum-sum-of-squared-difference
🏷️ Tags
#greedy #array #binary_search #sorting #heap_priority_queue
🟡2333.minimum-sum-of-squared-difference
🏷️ Tags
#greedy #array #binary_search #sorting #heap_priority_queue
Telegraph
minimum-sum-of-squared-difference
You are given two positive 0-indexed integer arrays nums1 and nums2, both of length n. The sum of squared difference of arrays nums1 and nums2 is defined as the sum of (nums1[i] - nums2[i])2 for each 0 <= i < n. You are also given two positive integers k1…
leetcode.cn 2026-10-12
🔴2897.apply-operations-on-array-to-maximize-sum-of-squares
🏷️ Tags
#greedy #bit_manipulation #array #hash_table
🔴2897.apply-operations-on-array-to-maximize-sum-of-squares
🏷️ Tags
#greedy #bit_manipulation #array #hash_table
Telegraph
apply-operations-on-array-to-maximize-sum-of-squares
给你一个下标从 0 开始的整数数组 nums 和一个 正 整数 k 。 你可以对数组执行以下操作 任意次 :
leetcode.com 2026-10-12
🔴2897.apply-operations-on-array-to-maximize-sum-of-squares
🏷️ Tags
#greedy #bit_manipulation #array #hash_table
🔴2897.apply-operations-on-array-to-maximize-sum-of-squares
🏷️ Tags
#greedy #bit_manipulation #array #hash_table
Telegraph
apply-operations-on-array-to-maximize-sum-of-squares
You are given a 0-indexed integer array nums and a positive integer k. You can do the following operation on the array any number of times:
leetcode.cn 2026-10-15
🟢2913.subarrays-distinct-element-sum-of-squares-i
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
🟢2913.subarrays-distinct-element-sum-of-squares-i
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
Telegraph
subarrays-distinct-element-sum-of-squares-i
给你一个下标从 0 开始的整数数组 nums 。 定义 nums 一个子数组的 不同计数 值如下:
leetcode.com 2026-10-15
🟢2913.subarrays-distinct-element-sum-of-squares-i
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
🟢2913.subarrays-distinct-element-sum-of-squares-i
🏷️ Tags
#binary_indexed_tree #segment_tree #array #hash_table
Telegraph
subarrays-distinct-element-sum-of-squares-i
You are given a 0-indexed integer array nums. The distinct count of a subarray of nums is defined as: