Given a non-empty string and an int n, return a new string where the char at index n has been removed. The value of n will be a valid index of a char in the original string (i.e. n will be in the range 0..str.length()-1 inclusive).

missingChar(“kitten”, 1)-> “ktten”
missingChar(“kitten”, 0) -> “itten”
missingChar(“kitten”, 4) ->”kittn”

public String missingChar(String str, int n) {
if(n>=0 && n<=str.length()-1)
{if(str.length()==1) return(" ");
else return( str.substring(0,n)+str.substring(n+1));
else return str;

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