LeetCode: 70. Climbing Stairs

爬一個階梯。到頂端總共需走n階,每次你都可以選擇爬1階或2階,問有幾種不同的方法可以爬到階梯頂端?

You are climbing a stair case. It takes n steps to reach to the top.

Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?

Note: Given n will be a positive integer.

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LeetCode: Maximum Subarray

題目給定一個整數陣列,要求找到一個連續的子陣列,這個子陣列的和是所有子陣列中最大的,並回傳該總和值。

Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.

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