paste函数

x=[1:5]

y=letters(1:5)

paste(y,x)

结果:"a 1" "b 2" "c 3" "d 4" "e 5"

paste(y,x,seq='')

结果:"a1" "b2" "c3" "d4" "e5"

paste(y,x,seq='_')

结果:"a_1" "b_2" "c_3" "d_4" "e_5"

paste(y,x,seq='',collapse='#')

结果:a1#b2#c3#d4#e5

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