troubleshooting Question

string at particular index

Avatar of gudii9
gudii9Flag for United States of America asked on
Programming Languages-OtherJavaJava EE
65 Comments3 Solutions453 ViewsLast Modified:
Hi

I was trying below example

http://codingbat.com/prob/p121596

I was not sure how to proceed on this. I wrote some dummy code as below

How to fix and improve the my code

public String altPairs(String str) {
for(int i=0;i<str.length();i++)
String str2=(str.substring(i,i+1)+str.substring(i+4,i+5));
  return str2;
}
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