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151.java
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151.java
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sample 0 ms submission
class Solution {
public String reverseWords(String s) {
StringBuilder sb = new StringBuilder();
int i = s.length() - 1;
while(i >= 0){
if(s.charAt(i) == ' '){
i--;
continue;
}
int start = s.lastIndexOf(' ', i);
sb.append(' ');
sb.append(s.substring(start + 1, i + 1));
i = start - 1;
}
if(sb.length() > 0){
sb.deleteCharAt(0);
}
return sb.toString();
}
}
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sample 34996 kb submission
public class Solution {
public String reverseWords(String s) {
String strs[] = s.trim().split("\\s+");
StringBuilder sb = new StringBuilder();
for(int i=strs.length-1;i>=0;i--){
sb.append(strs[i]).append(" ");
}
if(sb.length()>0)
sb.setLength(sb.length()-1);
return sb.toString();
}
}
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