arranging-coins

Arranging Coins

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arrangeCoins

You have <code>n</code> coins and you want to build a staircase with these coins. The staircase consists of <code>k</code> rows where the <code>ith</code> row has exactly <code>i</code> coins. The last row of the staircase may be incomplete.

Given the integer <code>n</code>, return the number of complete rows of the staircase you will build.

&nbsp;
Example 1:
<img alt="" src="https://assets.leetcode.com/uploads/2021/04/09/arrangecoins1-grid.jpg" style="width: 253px; height: 253px;" />
<pre>
Input: n = 5
Output: 2
Explanation: Because the 3rd row is incomplete, we return 2.
</pre>

Example 2:
<img alt="" src="https://assets.leetcode.com/uploads/2021/04/09/arrangecoins2-grid.jpg" style="width: 333px; height: 333px;" />
<pre>
Input: n = 8
Output: 3
Explanation: Because the 4th row is incomplete, we return 3.
</pre>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= n &lt;= 231 - 1</code></li>
</ul>

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