codewars练习（javascript）-2021/2/17

codewars-js练习

2021/2/17

github 地址

my github地址，上面有做的习题记录，不断更新…

【1】<8kyu>【Beginner - Reduce but Grow】

Given a non-empty array of integers, return the result of multiplying the values together in order.

example：

[1, 2, 3, 4] => 1 * 2 * 3 * 4 = 24

solution

	<script type="text/javascript">
    function grow(x){
      // console.log(x);
      var result=1;
      for(var i=0;i<x.length;i++){
        result *=x[i];
      }
      return result;
    }
 		
		// 验证
		console.log(grow([1,2,3,4]));// 24
	</script>

【2】<7kyu>【Spoonerize Me】

In its most basic form a spoonerism is a two word phrase in which only the first letters of each word are swapped:

“not picking” --> “pot nicking”

Your task is to create a function that takes a string of two words, separated by a space: words and returns a spoonerism of those words in a string, as in the above example.

首字母互换

example：

"not picking" --> "pot nicking"

solution

	<script type="text/javascript">
    function spoonerize(words) {
      // console.log(words)
      var arr = words.split(' ');
      // console.log(arr)
      var arr1 =arr[0].split('')
      var arr2 = arr[1].split('')
      // console.log(arr1)
      // console.log(arr2)

      var temp1 = arr2[0]
      var temp2 = arr1[0]
      arr1.shift()
      arr2.shift()
      // console.log(arr2)
      // console.log('arr1',arr1)
      var result = temp1 + arr1.join('') +' '+ temp2 + arr2.join('')
      // console.log('result',result)
      return result

    }
 		
		// 验证
		console.log(spoonerize("nit picking"));//"pit nicking"
    console.log(spoonerize("jelly beans"));// "belly jeans"
	</script>

以上为自己思路供大家参考，可能有更优的思路。