Why my Solution Gets "Time Limit Exceeded"?

  • 0

    I think the solution is pretty straightforward, but still I get "Time Limit Exceeded". Can someone explain me why? Here is my solution:

    public String reverseWords(String s) {
        if(s==null || s.length() <=1)
            return s;
        String[] splits = s.split(" ");
        StringBuilder res = new StringBuilder();
        for(String str : splits){
                res.append(" ");   
        return res.toString();
    public static String reverse(String str){
        if(str==null || str.length()<=1)
            return str;
        int start = 0;
        int end = str.length()-1;
        char[] curr = str.toCharArray();
            char temp = curr[start];
            curr[start] = curr[end];
            curr[end] = temp;
        return new String(curr);

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