Python evaluates expressions from left to right. Notice that while evaluating an assignment, the right-hand side is evaluated before the left-hand side. Python docs: Evaluation order That means the following for the expression a,b = b,a : The right-hand side b,a is evaluated, that is to say, a tuple of two elements is created in … Read more
It’s similar to the way you can use a temporary variable to swap two integers: int t = a; // temporarily save a a = b; // overwrite a with b b = t; // overwrite b with saved a In this case, you can create a temporary buffer of size 32 bytes with the … Read more
I think you need something like this: // Make sure x is smaller than y if(x>y) { swap(&x, &y); } // Make sure x is smaller than z if(x>z) { swap(&x, &z); } // Now x is smaller than both y and z // Make sure y is smaller than z if(y>z) { swap(&y, &z); … Read more
In C++, you typically use std::swap for exchanging two objects, e.g. std::string a = “Hello”, b = “world”; std::swap(a, b); For std::string, there’s also std::basic_string::swap Exchanges the contents of the string with those of other. All iterators and references may be invalidated. a.swap(b);
If last index is valid, i.e. there are at least that much cards to move in the array then you can do this: def move_cards(cards): if cards[-1] == 3: return cards[2:-1] + cards[-3:-1] + [3] else: return cards[cards[-1]:-1] + cards[0:cards[-1]] + [cards[-1]] move_cards([1, 2, 3, 4, 27, 28, 5, 6, 7, 2]) [3, 4, 27, … Read more
First you would need to create a Map of all the letters: Hashmap<String, String> map = new Hashmap<String, String>(); map.put(“a”, “c”); map.put(“b”, “f”); … To get the translation of each letter you simply get the value from the map: String translatedLetter = map.get(letter); So now you would need to create a loop to translate the … Read more