我如何在扼杀中找到一种特性的second指数。 例如:
String a="aa{aaaaaaa{aaa}";
我愿找到第二个<代码>{的指数值。 页: 1
选择第一种权利,然后从那里找到下一个权利。 第二点:
int secondIndex = a.indexOf( { , a.indexOf( { )+1);
转而上载<代码>indexOf(>,该代码将起始索引作为第二参数。
str.indexOf("{", str.indexOf("}") + 1);
为了在扼杀中发现第二次发生性质,你应首先查明首次发生的情况,然后在该指数之后再次寻找特征。
For example, let s say we have the string: String a = "aa{aaaaaaa{aaa}"; and we want to find the second occurrence of { , which is at index 10.
我们可以发现第一种情况是<代码>a.indexOf({>)。 为了发现第二种情况,我们需要再次使用<代码>indexOf()方法,从首次发生后指数开始。 因此,该守则将照此办理:a.indexOf({,a.indexOf({)+ 1)。
希望:
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