Онлайн обратно String

I need a little help. I found a question like "Write a Java program that will reverse each word of user given string without altering their position and using any built in function."

I solved a code for reversing the whole sentence, but I don't know how to solve this one. Please help me...

import java.io.*;class test25 {     public static void main(String args[]) throws IOException {         BufferedReader br = new BufferedReader(new InputStreamReader(System.in));        System.out.print("Enter string: ");        String s = br.readLine();        String reverse = "";        int length = s.length();        for (int i = length - 1; i >= 0; i--)            reverse = reverse + s.charAt(i);        System.out.println("Result:" + reverse);     } }

Hello guys i got a homework where i get a string and basically i should change the letters in it then return it backward:

A --> T

T --> A

G --> C

C --> G

Here is my code :

def dnaComplement(s):    newWord = ""    for x in s:        if x == "T":            newWord.join('A')        elif x == "A":            newWord.join('T')        elif x == "C":            newWord.join('G')        elif x == "G":            newWord.join('C')    return newWord[::-1]

the input is: ACCGGGTTTT

I tried coderbyte and looks something is wrong with it. The first challenge is simply to reverse a string. I did this in java:

import java.util.*; import java.io.*;class Main {  public static String FirstReverse(String str) {    char[] chars = str.toCharArray();    String ret = "";    for (int i = chars.length - 1; i >= 0; i--) {      ret += chars[i];    }    return ret;  }  public static void main (String[] args) {      // keep this function call here         Scanner s = new Scanner(System.in);    System.out.print(FirstReverse(s.nextLine()));   }}

It said, that three test cases had wrong output and there was the correct output. I tried running the code with the specified cases and it printed the same string as correct output for that case. So I tried resubmitting it and it said that only one test case was correct and all other had wrong out put. So I said OK and rewrote my code this way:

import java.util.*; import java.io.*;class Main {  public static String FirstReverse(String str) {    return new StringBuilder(str).reverse().toString();  }  public static void main (String[] args) {      // keep this function call here         Scanner s = new Scanner(System.in);    System.out.print(FirstReverse(s.nextLine()));   }}

Unfortunately it still says only one test case was successful... Any ideas what happened? Thanks

I need to have my code output the String in reverse order. For example, the output should have "code" return as "edoc". This is what I have done so far.

public String reverseString(String str) { String res = "";for (int i = 0; i <= str.length()-1; i++) {   res = res + str.charAt(i); }  return res;}

/1.There is a task to reverse a string using splitting the character dot(.) , Without reversing the word.
2.The string should be given by the user like :
input string : This.is.not.the.proper.way
output reverse string : way.proper.the.not.is.This
3.Please clear ,what is the problem in the code ?/

    #include <stdio.h>    #include <string.h>    char *func(int i, int j, char *str){        char new[50];        int k = 0;        int l;        for (k=0,l=i;k<=j-i+1,l<=j;k++,l++){           new[k]= str[l];        };    return *new;    }    int main()    {        int i,j,x;        char str[50];        printf("Give any string  ");        scanf("  %s",str);        x = strlen(str);        j = x-1;        int k = 0;        for (i=x-1;i>=0;i--){            if (str[i] == '.'){                printf("%s", func(i,j,str));                k = k+1;                j = i-j;            };        };       return 0;    }