替换空格
替换空格
http://www.nowcoder.com/questionTerminal/4060ac7e3e404ad1a894ef3e17650423
public String replaceSpace(StringBuffer str) {
char[] array = str.toString().toCharArray();
int count = 0;
for (char c : array) {
if (c == ' ') {
count++;
}
}
int len = array.length;
char[] newChars = new char[count * 2 + len];
int index = 0;
for (char c : array) {
if (c == ' ') {
newChars[index++] = '%';
newChars[index++] = '2';
newChars[index++] = '0';
} else {
newChars[index++] = c;
}
}
return new String(newChars);
}
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