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R语言中
nchar函数:主要使用来返回字符长度
而length函数:则是用来返回字符数量
#Getting the length of a string
x="John"
y=c("Jim","Tony","kavry")
nchar(x) #return the number of characters in the string
nchar(y) #if a vector,return the length of each string
length(x)#return the length of character,result=1
length(y)#return the length of vector,result=3
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