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A more succinct answer #9

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27 changes: 7 additions & 20 deletions java/string-2/mixString.java
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Original file line number Diff line number Diff line change
Expand Up @@ -3,24 +3,11 @@
* and so on. Any leftover chars go at the end of the result.
*/
public String mixString(String a, String b) {
char[] arr;
String end;
int count = 0;

if(a.length() < b.length()) {
arr = new char[2 * a.length()];
end = b.substring(a.length());
} else {
arr = new char[2 * b.length()];
end = a.substring(b.length());
}

for(int i = 0; i < arr.length / 2; i++) {
arr[count] = a.charAt(i);
count++;
arr[count] = b.charAt(i);
count++;
}

return new String(arr) + end;
StringBuffer mix = new StringBuffer();
int len = (a.length() > b.length())? a.length(): b.length();
for(int i = 0; i < len; i++){
if(i < a.length()) mix.append(a.charAt(i));
if(i < b.length()) mix.append(b.charAt(i));
}
return mix.toString();
}