As a Java developer Python amazes me how things can be done stupid simple.
Try to reverse a string in java:
public static void main(String[] args) {
String mytext = "abcdefg";
StringBuilder result = new StringBuilder();
for (int i = mytext.length(); i > 0; i--) {
result.append(mytext.charAt(i-1));
}
System.out.println(result);
}
Do it in Python:
mytext = "abcdefg"[::-1]
print(mytext)
The array indexing and slicing explained:
| Value | Explaination | |
| "abcdefg"[5] | "f" | Get the element on the 5th index number |
| "abcdefg"[2:] | "cdefg" | Slice the array from index 2 to the end |
| "abcdefg"[:2] | "ab" | Slice the array to index 2(exclusive) |
| "abcdefg"[1:4] | "bcd" | Get all elements starting from index 1 to index 4(exclusive) |
| "abcdefg"[2:7:2] | "ceg" | Get all elements starting from index 1 to index 7(exclusive), with steps of 2 |
| "abcdefg"[::2] | "aceg" | From the beginning to the end, take steps of 2 |
| "abcdefg"[::-1] | "gfedcba" | Take steps of -1 which actually iterates in reverse order. |