title: String split based on index
body: <p>I am having a DF which consist of a column having alpha numeric values.I want to split those values and store it in separate columns.</p>
  
  <p>I am having a data frame which is having a column with alpha numeric values. I want to split that value and store it to new column as shown below in the sample.</p>
  
  <p>str&lt;-c("1001AA00100BC300AA01111000AA0299F40400F4053DF40C0000F4030000F40680F4077",
         "1001AA00100BC300AA01111000AA0299F40400F4053DF40C0000F4030000F40680F4077",
         "1001AA00100BC300AA01111000AA0299F40400F4053DF40C0000F4030000F40680F4077",
         "1001AA00100BC300AA01111000AA0299F40400F4053DF40C0000F4030000F40680F4077",
         "1001AA00100BC300AA01111000AA0299F40400F4053DF40C0000F4030000F40680F4077",
         "1001AA00100BC300AA01111000AA0299F40400F4053DF40C0000F4030000F40680F4077")</p>
  
  <p>Output:</p>
  
  <pre>
  
  AA00 100BC300 AA01 111000 AA02 99 F40400F4053DF40C0000F4030000F40680F4077
  AA00 100BC300 AA01 111000 AA02 99 F40400F4053DF40C0000F4030000F40680F4077
  AA00 100BC300 AA01 111000 AA02 99 F40400F4053DF40C0000F4030000F40680F4077
  AA00 100BC300 AA01 111000 AA02 99 F40400F4053DF40C0000F4030000F40680F4077
  AA00 100BC300 AA01 111000 AA02 99 F40400F4053DF40C0000F4030000F40680F4077
  AA00 100BC300 AA01 111000 AA02 99 F40400F4053DF40C0000F4030000F40680F4077
  
  </pre>