【leetcode_easy】1588. Sum of All Odd Length Subarrays

1588. Sum of All Odd Length Subarrays

solution#1: Brute Search;

code

 

solution#2: 元素求和；

code

 

solution#3: 找规律；

code:

 

 

 

参考

1. leetcode_easy_array_1588. Sum of All Odd Length Subarrays;

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