ch04xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

package ch04; public class SeqString implements IString { char[] data; public SeqString(char[] data) { this.data=data; } @Override public IString strAssign(char[] data) { // TODO Auto-generated method stub return null; } @Override public IString strCopy(IString t) { // TODO Auto-generated method stub return null; } @Override public int strCmp(IString t) { int i,comlen; if(this.strLength()<t.strLength()) comlen=this.strLength(); else comlen=t.strLength(); for(i=0;i<comlen;i++) { SeqString t1=(SeqString)t; if(this.data[i]>t1.data[i]) return 1; else if(this.data[i]<t1.data[i]) return -1; if(this.strLength()==t1.strLength()) return 0; else if(this.strLength()>t1.strLength()) return 1; } return -1; } @Override public int strLength() { int len=0; for(int i=0;i<data.length;i++) if(data[i]!='\u0000') len++; return len; } @Override public IString insStr(int i, IString s2) { int j; char[ ] str; str=new char[this.strLength()+s2.strLength()]; if(i<=0 || i>data.length+1) return null; for(j=0;j<i-1;j++) { str[j]=this.data[j]; } for(j=0;j<s2.strLength();j++) { str[i+j-1]=((SeqString)s2).data[j]; } for(j=i-1;j<this.strLength();j++) { str[s2.strLength()+j]=this.data[j]; } return new SeqString(str); } @Override public IString concat(IString t) { // TODO Auto-generated method stub return null; } @Override public IString subStr(int i, int j) { // TODO Auto-generated method stub return null; } @Override public IString delStr(int i, int j) { // TODO Auto-generated method stub return null; } @Override public IString repStr(int i, int j, IString t) { // TODO Auto-generated method stub return null; } @Override public void dispStr() { for(int i=0;i<data.length;i++) { System.out.print(data[i]); } System.out.println(); } }