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solution 344 by java

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	`1`	`+/**`
	`2`	`+ * LC#348: reverse string 反转字符串`
	`3`	`+ * Link:https://leetcode-cn.com/problems/reverse-string/`
	`4`	`+ * Solution:双指针,跟反转数组差不多。。。`
	`5`	`+ */`
	`6`	`+public class Solution344 {`
	`7`	`+`
	`8`	`+ public static void reverseString(char[] s) {`
	`9`	`+ int n = s.length, left = 0, right = n - 1;`
	`10`	`+ while (left < right) {`
	`11`	`+ char tmp = s[left];`
	`12`	`+ s[left] = s[right];`
	`13`	`+ s[right] = tmp;`
	`14`	`+ left++; right--;`
	`15`	`+ }`
	`16`	`+ }`
	`17`	`+`
	`18`	`+ public static void main(String[] args) {`
	`19`	`+ char[] s = {'h', 'e', 'l', 'l'};`
	`20`	`+ reverseString(s);`
	`21`	`+ for (char c : s) {`
	`22`	`+ System.out.println(c);`
	`23`	`+ }`
	`24`	`+// System.out.println(Arrays.toString(s));`
	`25`	`+ }`
	`26`	`+}`

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