【练习】前缀和技巧经典习题

1314. 矩阵区域和 https://leetcode.cn/problems/matrix-block-sum

724. 寻找数组的中心下标 https://leetcode.cn/problems/find-pivot-index

238. 除自身以外数组的乘积 https://leetcode.cn/problems/product-of-array-except-self

1352. 最后 K 个数的乘积 https://leetcode.cn/problems/product-of-the-last-k-numbers

525. 连续数组 https://leetcode.cn/problems/contiguous-array

523. 连续的子数组和 https://leetcode.cn/problems/continuous-subarray-sum

560. 和为 K 的子数组 https://leetcode.cn/problems/subarray-sum-equals-k

1124. 表现良好的最长时间段 https://leetcode.cn/problems/longest-well-performing-interval

974. 和可被 K 整除的子数组 https://leetcode.cn/problems/subarray-sums-divisible-by-k