18 lines
597 B
Java
18 lines
597 B
Java
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public class StringReverse {
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// 字符串反转 数组双指针解法
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// String无法直接操作内部的char数组，避免不了2倍内存开销
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public static void main(String[] args) {
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String str = "1234567";
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char[] chars = str.toCharArray();
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int len = chars.length;
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char x, y;
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for (int index = 0, mid = len >> 1, end = len - 1; index < mid; index++, end--) {
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x = chars[index];
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y = chars[end];
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chars[index] = y;
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chars[end] = x;
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}
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System.out.println(new String(chars));
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}
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}
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