collectionMystery1

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Main Page → Exercises → Java → Solve an Exercise

Language/Type: Java collection mystery collections

Write the output that is printed when the given method below is passed each of the following maps as its parameter. Recall that maps print in a key=value format. Your answer should display the right keys and values in the order they are added to the result map.

public static void collectionMystery1(HashMap<String, String> map) {
    HashMap<String, String> result = new HashMap<String, String>();
    for (String k : map.keySet()) {
        String v = map.get(k);
        if (k.charAt(0) <= v.charAt(0)) {
            result.put(k, v);
        } else {
            result.put(v, k);
        }
    }
    System.out.println(result);
}

`{two=deux, five=cinq, one=un, three=trois, four=quatre}`
`{skate=board, drive=car, program=computer, play=computer}`
`{siskel=ebert, girl=boy, heads=tails, ready=begin, first=last, begin=end}`
`{cotton=shirt, tree=violin, seed=tree, light=tree, rain=cotton}`

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collectionMystery1