Leetcode 441. Arranging Coins

文章作者：Tyan
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1. Description

2. Solution

class Solution {
public:
    int arrangeCoins(int n) {
        int k = 0;
        while(n > 0) {
            ++k;
            n -=k;
        }
        if(n == 0) {
            return k;
        } 
        return k - 1;
    }
};

Reference

1. https://leetcode.com/problems/arranging-coins/description/