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public class CountWordsInString {
public static void main(String[] args) {
String s=" hello world hi";
System.out.println("s= "+s);
int count=0;
for(int i=0;i<s.length()-1;i++) {
if(s.charAt(i)==' ' && s.charAt(i+1)!=' ')
count++;
}
System.out.println("count= "+count);
}
}
Output:
s= hello world hi
count= 3