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Double every number

Return a new ArrayList holding every number from the original, doubled, in the same order. Leave the original alone.

java.util.ArrayList<Integer> doubled(java.util.ArrayList<Integer> list)

Solution.java

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Results

Examples

Solution.doubled(new java.util.ArrayList<>(java.util.List.of(1, 2, 3))).toString() → [2, 4, 6]
Solution.doubled(new java.util.ArrayList<Integer>()).toString() → []

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