在一些字符之间放置空格

Question

我想在数学运算符之后和之前放置空格：

例如：

55/2 * 456-5 + 5

结果： 55/2 * 456 - 5 + 5

Answer 1

一种方法：

String lEquation = "55/2*456-5+5";
lEquation = lEquation.replaceAll("\\/"," \\/ ").replaceAll("\\*"," \\* ").replaceAll("-"," - ").replaceAll("\\+"," \\+ ");
System.out.println("My equation: "+ lEquation);

结果将是：

My equation: 55 / 2 * 456 - 5 + 5