for index, val in enumerate(reversed(list)): print len(list) - index - 1, val #2 def reverse_enum(L): for index in reversed(xrange(len(L))): yield index, L[index] L = ['foo', 'bar', 'bas'] for index, item in reverse_enum(L): print index, item #3 L = ['foo', 'b...
【Python面试真题】-how do I iterate over a sequence in reverse order? for x in reversed(sequence): ... # do something with x.. 如果不是list, 最通用但是稍慢的解决方案是: for i in range(len(sequence)-1, -1, -1): x = sequence[i] <do something with x>...
4. Iterate String using Python For Loop in Reverse Order Alternatively, you can use for loop to iterate over the string and get each character in reverse order. You can passrange(0, len(str))into reversed() function and iterate it using for loop, for each iteration you can retrieve the ...
Back to Set ↑Question We would like to know how to iterate through a list in reverse order. Answer import java.util.Iterator; import java.util.LinkedList; // w w w .j av a 2 s.co m class ReverseIterating<T> implements Iterable<T> { private final LinkedList<T> list; public Rever...
If you need to destructively iterate through a dictionary in Python, then .popitem() can do the trick for you: Python >>> likes = {"color": "blue", "fruit": "apple", "pet": "dog"} >>> while True: ... try: ... print(f"Dictionary length: {len(likes)}") ... item ...
Let’s understand the code part,for num in numbers:aforloop is used to iterate over each element innumbers. Then new list is created by concatenating the current element with thereverse_numusing the+operator. Specifically, the current element is added to the front ofreverse_numby placing it ...
Using Python for loop, you can iterate over characters in a string and append a character to the beginning of a new string. This will reverse the provided string. Reverse string using for loop a = 'Python' b = '' for c in a: b = c + b print(b) # nohtyP Reverse the string ...
Method 2: Using a Reverse Iterative Approach In this approach, we use the toCharArray method of string to convert it into a character array first. After converting the given string into a character array we just iterate the array from the last position and append the characters into an empty...
We can easily iterate through the elements of an array using Python for loop as shown in the example below. Example: from array import * array_1 = array(‘i’, [1,2,3,4,5]) for x in array_1: print (x) Output: 1 2 3 4 5 Insertion of Elements in an Array in Python: ...
We use a ‘while’ loop to iterate through the characters of a string in reverse order. Let us see how it works:public class StringReversal { public static void main(String[] args) { String original = "Intellipaat"; String reversed = reverseString(original); System.out.println("Original:...