Continuous variable into levels

Hello everyone

I have a variable with about 5000 different values

var1= c(0, 123, 400, .....4988)

I want to convert it into different levels for some comparisons like

if value is between 1-100 do something
else
do other things

Is there any sophisticated way to do that than the following:

var2=cut(var1, br=c(-1,500, 501,1000, 1001,5000))

Thank you

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