【前綴和】和為K、和可被K整除的子數組
連續子數組問題是算法中經常可以見到的一類題目，通過幾個典型的題目分析，可以發現這類題目主要分為兩大類，其解題思路通過最簡單的子串枚舉（枚舉所有的子串起點和終點）來暴力解決大都不難，但是如果考慮到對空間和時間的要求，其解答就需要一定的算法技巧。 子數組和問題（前綴和+哈希表） 子數組 ...
原文：[LeetCode] 974. Subarray Sums Divisible by K 子數組數字之和可被K整除
Given an arrayAof integers, return the number of contiguous, non empty subarrays that have a sum divisible byK. Example : Note: lt A.length lt lt A i lt lt K lt 這道題給了一個數組，讓返回數組的數字之和可以被K整除的非空子數組的個數。博主 ...
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