Using Java to achieve word order in reverse order
- 2020-04-01 04:04:56
- OfStack
This article will just sort the words in the array in reverse order like how old are you -> You are old how
Sample program output result:
The first:
How old are you! The & # 63; I don 't understand
The second:
I understand, don 't & # 63; ! You are old How
The sample code
public static void main(String[] args) {
char[] chars= new String("How old are you !? I don't understand").toCharArray();
System.out.println("the first:");
System.out.println(chars);
reverseWords(chars); //The main method
System.out.println("the second:");
System.out.println(chars);
}
public static void reverseWords(char[] chars) {
reverseChars(chars,0,chars.length-1);
int begin = -1;
int end = 0;
for(int i=0;i<chars.length;i++){
char c = chars[i];
if((c>='a'&&c<='z')||(c>='A'&&c<='Z')||c=='''){ //Simply determine if it is a continuous word
if(begin==-1){
begin = i;
end=i;
}else{
end=i;
if(i==chars.length-1){
reverseChars(chars,begin,end);
}
}
}else{
if(begin!=-1){
reverseChars(chars,begin,end);
begin=-1;
end=0;
}
}
}
}
public static void reverseChars(char[] chars, int begin, int end) {
while(end>begin){
char c = chars[begin];
chars[begin] = chars[end];
chars[end] = c;
begin++;
end--;
}
}
Above is the use of Java to achieve reverse word order, I hope you can understand, to help you