本文介绍了将字符串置换为大写和小写的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个字符串,abc。程序如何(如果可能,在Java中)如何置换字符串?
I have a string, "abc". How would a program look like (if possible, in Java) who permute the String?
例如:
abc ABC Abc aBc abC ABc abC AbC推荐答案
这样的事情可以解决问题:
Something like this should do the trick:
void printPermutations(String text) { char[] chars = text.toCharArray(); for (int i = 0, n = (int) Math.pow(2, chars.length); i < n; i++) { char[] permutation = new char[chars.length]; for (int j =0; j < chars.length; j++) { permutation[j] = (isBitSet(i, j)) ? Character.toUpperCase(chars[j]) : chars[j]; } System.out.println(permutation); } } boolean isBitSet(int n, int offset) { return (n >> offset & 1) != 0; }更多推荐
将字符串置换为大写和小写
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