緙栫▼棰橈細鍘繪帀瀛楃涓蹭腑澶氫綑鐨?0",
渚嬪
0-->0
3-->3
000-->0
01010-->101
301100-->3011
00103-->103
1020.00-->1020
001.0100-->1.01
00.003-->0.003
鑻ュ瓧絎︿覆涓瓧絎?,E+-)鍒欎負闈炴硶瀛楃涓層?br />
絳旀錛?br /> /**
* @author wind
*
*/
public class RemoveZero {
/**
* 鍘婚櫎鏈鍓嶉潰鐨?
* @param args
*/
static String removeFirst(String str) {
while (true) {
if (str.length() > 1) {
char c = str.charAt(0);
char nextC = str.charAt(1);
if (c != '0') {
break;
} else {
if (nextC == '.') {
break;
} else {
str = str.substring(1);
}
}
} else {
break;
}
}
return str;
}
/*
* 鍘婚櫎鏈鍚庨潰鐨?
*/
static String removeLast(String str) {
while (true) {
if (str.length() > 1) {
char c = str.charAt(str.length() - 1);
char beforeC = str.charAt(str.length() - 2);
if (c != '0') {
break;
} else {
if (beforeC == '.') {
str = str.substring(0, str.length() - 2);
break;
} else {
str = str.substring(0, str.length() - 1);
}
}
} else {
break;
}
}
return str;
}
/*
* 鍒ゆ柇鏄惁鏈夐潪娉曞瓧絎?br /> */
static boolean isCorrect(String str) {
return !str.contains("E") && !str.contains(",") && !str.contains("+")
&& !str.contains("-");
}
/*
* 鏄劇ず緇撴灉
*/
static void showResult(String str) {
if (isCorrect(str)) {
System.out.println(str + "-->" + removeLast(removeFirst(str)));
} else {
System.out.println("瀛楃涓蹭腑鍚湁闈炴硶瀛楃(,E+-)!");
}
}
public static void main(String[] args) {
String str = "003E+3";
showResult(str);
str = "0";
showResult(str);
str = "3";
showResult(str);
str = "000";
showResult(str);
str = "01010";
showResult(str);
str = "301100";
showResult(str);
str = "00103";
showResult(str);
str = "1020.00";
showResult(str);
str = "001.0100";
showResult(str);
str = "00.003";
showResult(str);
}
}
bluerain_wind 2008-04-24 10:08 鍙戣〃璇勮
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