Defanging an IP Address
没啥解释的.
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class Solution { public String defangIPaddr(String address) { StringBuffer sb = new StringBuffer(); for(int i = 0 ; i < address.length(); i++) { if(address.charAt(i) == '.') { sb.append("["); sb.append("."); sb.append("]"); } else { sb.append(address.charAt(i)); } } return sb.toString(); } } |