Putting curly braces in a sentences for specific words according to their start and end indexes

Posted by Suneeta Singh on Stack Overflow See other posts from Stack Overflow or by Suneeta Singh
Published on 2012-11-16T10:32:28Z Indexed on 2012/11/16 11:00 UTC
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I need to put curly braces in a sentence according to the indexes. Suppose my input sentence is: "I am a girl and I live in Nepal." and I need to put curly braces according to

[12, 15], [2, 4], [23, 25]

These indexes are corresponding to the words "am", "and" and "in" respectively. The required output should be:

"I {am} a girl {and} I live {in} Nepal."

I have tried using substring but after it replaces first word, it then shifts the characters by two indexes and that is the problem I am having.

Can anyone provide me solution to get the required output?

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