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  • 1.4---字符串空格变成20%(CC150)

    import CtCILibrary.AssortedMethods;
    
    public class Question {
        // Assume string has sufficient free space at the end
        public static void replaceSpaces(char[] str, int length) {
            int spaceCount = 0, index, i = 0;
            for (i = 0; i < length; i++) {
                if (str[i] == ' ') {
                    spaceCount++;
                }
            }
            index = length + spaceCount * 2;
            str[index] = '';
            for (i = length - 1; i >= 0; i--) {
                if (str[i] == ' ') {
                    str[index - 1] = '0';
                    str[index - 2] = '2';
                    str[index - 3] = '%';
                    index = index - 3;
                } else {
                    str[index - 1] = str[i];
                    index--;
                }
            }
        }
        
        public static void main(String[] args) {
            String str = "abc d e f";
            char[] arr = new char[str.length() + 3 * 2 + 1];
            for (int i = 0; i < str.length(); i++) {
                arr[i] = str.charAt(i);
            }
            replaceSpaces(arr, str.length());    
            System.out.println(""" + AssortedMethods.charArrayToString(arr) + """);
        }
    }
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  • 原文地址:https://www.cnblogs.com/yueyebigdata/p/5051805.html
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