56 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			56 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
| ---
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| id: 5900f3a61000cf542c50feb9
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| challengeType: 5
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| title: 'Problem 58: Spiral primes'
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| videoUrl: ''
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| localeTitle: 问题58:螺旋素数
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| ---
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| 
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| ## Description
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| <section id="description">从1开始并以下列方式逆时针旋转,形成边长为7的方形螺旋。 37 36 35 34 33 32 31 38 17 16 15 14 13 30 39 18 5 4 3 12 29 40 19 6 1 2 11 28 41 20 7 8 9 10 27 42 21 22 23 24 25 2643 44 45 46 47 48 49这是有趣的是,奇数方块位于右下角,但更有意思的是沿着两条对角线的13个数字中有8个是素数;也就是说,比例为8 /13≈62%。如果在上面的螺旋周围缠绕一个完整的新层,则将形成具有边长9的方形螺旋。如果继续这个过程,那么沿着两条对角线的素数比首先低于10%的方形螺旋的边长是多少? </section>
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| 
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| ## Instructions
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| <section id="instructions">
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| </section>
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| 
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| ## Tests
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| <section id='tests'>
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| 
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| ```yml
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| tests:
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|   - text: <code>euler58()</code>应返回26241。
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|     testString: 'assert.strictEqual(euler58(), 26241, "<code>euler58()</code> should return 26241.");'
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| 
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| ```
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| 
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| </section>
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| 
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| ## Challenge Seed
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| <section id='challengeSeed'>
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| 
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| <div id='js-seed'>
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| 
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| ```js
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| function euler58() {
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|   // Good luck!
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|   return true;
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| }
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| 
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| euler58();
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| 
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| ```
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| 
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| </div>
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| 
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| 
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| 
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| </section>
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| 
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| ## Solution
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| <section id='solution'>
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| 
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| ```js
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| // solution required
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| ```
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| </section>
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