java reverse a string
// Library approach
public static String solution(String str) {
// StringBuilder is not thread-safe, use StringBuffer
return new StringBuffer(str).reverse().toString();
}
// DIY approach
public static String solution(String str) {
char[] chars = str.toCharArray();
for(int i = 0, j = str.length() - 1; i < j; i++, j--) {
char ch = chars[i];
chars[i] = chars[j];
chars[j] = ch;
}
return new String(chars);
}reverse a string in java
// Not the best way i know but i wanted to challenge myself to do it this way so :)
public static String reverse(String str) {
char[] oldCharArray = str.toCharArray();
char[] newCharArray= new char[oldCharArray.length];
int currentChar = oldCharArray.length-1;
for (char c : oldCharArray) {
newCharArray[currentChar] = c;
currentChar--;
}
return new String(newCharArray);
}Copyright © 2021 Codeinu
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