check-good-integer

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Algorithms

You are given a positive integer <code>n</code>.

Let <code>digitSum</code> be the sum of the digits of <code>n</code>, and let <code>squareSum</code> be the sum of the squares of the digits of <code>n</code>.

An integer is called good if <code>squareSum - digitSum &gt;= 50</code>.

Return <code>true</code> if <code>n</code> is good. Otherwise, return <code>false</code>.

&nbsp;
Example 1:

<div class="example-block">
Input: n = 1000

Output: false

Explanation:

<ul>
	<li>The digits of 1000 are 1, 0, 0, and 0.</li>
	<li>The <code>digitSum</code> is <code>1 + 0 + 0 + 0 = 1</code>.</li>
	<li>The <code>squareSum</code> is <code>12 + 02 + 02 + 02 = 1</code>.</li>
	<li>The <code>squareSum - digitSum</code> is <code>1 - 1 = 0</code>. As 0 is not greater than or equal to 50, the output is <code>false</code>.</li>
</ul>
</div>

Example 2:

<div class="example-block">
Input: n = 19

Output: true

Explanation:

<ul>
	<li>The digits of 19 are 1 and 9.</li>
	<li>The <code>digitSum</code> is <code>1 + 9 = 10</code>.</li>
	<li>The <code>squareSum</code> is <code>12 + 92 = 1 + 81 = 82</code>.</li>
	<li>The <code>squareSum - digitSum</code> is <code>82 - 10 = 72</code>. As 72 is greater than or equal to 50, the output is <code>true</code>.</li>
</ul>
</div>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= n &lt;= 109</code></li>
</ul>

Weekly Contest 506

weekly-contest-506

checkGoodInteger

Mid Level

Check Good Integer

Math

Simulation

Accepted

Wrong Answer

Memory Limit Exceeded

Output Limit Exceeded

Time Limit Exceeded

Runtime Error

Internal Error

Compile Error

Timeout

Restrictions Failed

cangjie

react

vanillajs

You are given a positive integer n.

Let digitSum be the sum of the digits of n, and let squareSum be the sum of the squares of the digits of n.

An integer is called good if squareSum - digitSum >= 50.

Return true if n is good. Otherwise, return false.

 

Example 1:

Input: n = 1000

Output: false

Explanation:

 * The digits of 1000 are 1, 0, 0, and 0.
 * The digitSum is 1 + 0 + 0 + 0 = 1.
 * The squareSum is 12 + 02 + 02 + 02 = 1.
 * The squareSum - digitSum is 1 - 1 = 0. As 0 is not greater than or equal to 50, the output is false.

Example 2:

Input: n = 19

Output: true

Explanation:

 * The digits of 19 are 1 and 9.
 * The digitSum is 1 + 9 = 10.
 * The squareSum is 12 + 92 = 1 + 81 = 82.
 * The squareSum - digitSum is 82 - 10 = 72. As 72 is greater than or equal to 50, the output is true.

 

Constraints:

 * 1 <= n <= 109