codewars练习（javascript）-2021/3/26

最新推荐文章于 2022-11-06 10:00:00 发布

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这篇博客记录了作者在 Codewars 上的 JavaScript 练习，包括两个问题：找出数组中的最小整数及将数学表达式转化为文字表述。第一个问题使用 `Math.min` 函数解决，第二个问题通过创建映射字典解析表达式并替换为文字描述。

文章目录

- codewars-js练习
- - 2021/3/26

codewars-js练习

2021/3/26

github 地址

my github地址，上面有做的习题记录，不断更新…

【1】<8kyu>【Find the smallest integer in the array】

example：

[78,56,232,12,8]//8

solution

<script type="text/javascript">
	function findSmallestInt(args) {
    	console.log(args)
    	return Math.min(...args)
  	}
    // 验证
    console.log(findSmallestInt([78,56,232,12,8]));//8
</script>

【2】<7kyu>【Write out expression!】

example：

"4 ** 9"  -->  "Four To The Power Of Nine"
"10 - 5"  -->  "Ten Minus Five"
"2 = 2"   -->  "Two Equals Two"
"2 x 3"   -->  "That's not an operator!"

solution

<script type="text/javascript">
	function expressionOut(expr) {
		// console.log(expr)
		var map = {"+":"Plus","-":"Minus","*":"Times","/":"Divided By","**":"To The Power Of","=":"Equals","!=":"Does Not Equal"}
		var map1 = {'1':'One','2':'Two','3':'Three','4':'Four','5':'Five','6':'Six','7':'Seven','8':'Eight','9':'Nine','10':'Ten'}
		var arr = expr.split(' ');
		if(! map.hasOwnProperty(arr[1]))return "That's not an operator!"
		arr.splice(1,1,map[arr[1]])
		arr.splice(0,1,map1[arr[0]])
		arr.splice(2,1,map1[arr[2]])
		return arr.join(' ')
	}
    // 验证
    console.log(expressionOut("1 + 3"));// "One Plus Three"
    console.log(expressionOut("2 - 10"));// "Two Minus Ten"
    console.log(expressionOut("4 ** 9"));//"Four To The Power Of Nine"
    console.log(expressionOut("2 x 3"));//"That's not an operator!"
</script>