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[英]How to replace a random letter in a triple with a random character from the alphabet, if the letters in the triple are repeated?
[英]How to manipulate An array of random alphabet letters?
我有一个大小为 1000 的数组,其中包含整个字母表的大写字母和小写字母。
我将如何打印生成的小写字母总数和生成的大写字母总数?
还
生成每个字母的数量(显示字母和生成的数量)以及该字母代表的总数的百分比。
尝试这个:
int lower = 0;
int upper = 0;
Map<Character, Integer> letterCounter = new TreeMap<>();
for (char letter : letterArr) { //Might need to use String if letterArr is String[]
if (Character.isLowerCase(letter)) lower++;
if (Character.isUpperCase(letter)) upper++;
Integer count = letterCounter.get(letter);
if (count != null) count++;
else letterCounter.put(letter, new Integer(1));
}
System.out.println("Number of upper case letters: " + upper);
System.out.println("Number of lower case letters: " + lower);
for (Map.entry<Character, Integer> e : letterCounter.entrySet()) {
System.out.println("Number of " + e.getKey() + " = " + e.getValue());
}
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