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srp4379@lausd.net > combineDigits
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Given a String, find any digits in the String and combine them to make a single number, in the order that they are encountered from left to right. If there are no digits in the String, just return zero.


combineDigits("abc1def2ghi3jklm") → 123
combineDigits("hello45goodbye78") → 4578
combineDigits("1green0blue53red8purple") → 10538

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public int combineDigits(String str) { }

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