Commitb768505

zongyanqi

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add Medium_151_Reverse_Words_in_a_String

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	`1`	`+/**`
	`2`	`+ * Given an input string, reverse the string word by word.`
	`3`	`+`
	`4`	`+ For example,`
	`5`	`+ Given s = "the sky is blue",`
	`6`	`+ return "blue is sky the".`
	`7`	`+ */`
	`8`	`+`
	`9`	`+/**`
	`10`	`+ *@param {string} str`
	`11`	`+ *@returns {string}`
	`12`	`+ */`
	`13`	`+varreverseWords=function(str){`
	`14`	`+returnstr.split(' ')`
	`15`	`+.filter(w=>w)`
	`16`	`+.reverse()`
	`17`	`+.join(' ');`
	`18`	`+};`

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