substring函数替换最后一个字符
时间: 2024-04-25 10:22:13 浏览: 115
在R语言中,可以使用substring函数来替换字符串中的指定位置的内容。如果要替换最后一个字符,可以先使用substring函数获取字符串的前面部分,然后再将新的字符添加到末尾。以下是一个示例代码:
```R
x <- "hello this is a string"
substring(x, first = 1, last = nchar(x) - 1) <- "new"
x
```
在这个例子中,我们首先将字符串x的最后一个字符替换为空字符串,然后再将新的字符添加到末尾。最终输出的结果是"hello this is a strinnew"。
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