如何将字符转换为ASCII码? [英] How to convert characters into ASCII code?

问题描述

我需要将字符串(例如"Hello")转换为数字字符串，即ASCII数字代码.

I need to translate a string of characters, for example "Hello", into a string of numbers which is the ASCII numeric codes.

例如:0 -> 48; a -> 97等

有人知道R函数可以执行此操作吗?希望函数或代码段可以将"Hello"转换为数字字符串，例如

Does anyone know an R function to do this? Hopefully, the function or piece of code will translate "Hello" into a numeric string like

c(72, 101, 108, 108, 111)

推荐答案

我猜你的意思是utf8ToInt，请参见

I guess you mean utf8ToInt, see the R manuals:

utf8ToInt("Hello")
# [1]  72 101 108 108 111

或者，如果您想将字母映射到其代码:

Or, if you want a mapping of the letters to their codes:

sapply(strsplit("Hello", NULL)[[1L]], utf8ToInt)
#  H   e   l   l   o 
# 72 101 108 108 111 

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