SDE - 1

def str_reverse(text):
Step1: ''' function to reverse the words in a string '''

Step2: split text on spaces and store in a list
lst = text.split(sep=' ')

Step3: step through the list in reverse order
rev = lst[::-1]

Step4: join the reversed list with a space between words to produce a final string
return ' '.join(rev)

print(str_reverse('Hello world'))

import java.util.Arrays;
import java.util.BitSet;

public class MissingNumberInArray {

public static void main(String args[]) {

// one missing number
printMissingNumber(new int[]{1, 2, 3, 4, 6}, 6);

// two missing number
printMissingNumber(new int[]{1, 2, 3, 4, 6, 7, 9, 8, 10}, 10);

// three missing number
printMissingNumber(new int[]{1, 2, 3, 4, 6, 9, 8}, 10);

// four missing number
printMissingNumber(new int[]{1, 2, 3, 4, 9, 8}, 10);

// Only one missing number in array
int[] iArray = new int[]{1, 2, 3, 5};
int missing = getMissingNumber(iArray, 5);
System.out.printf("Missing number in array %s is %d %n", 
Arrays.toString(iArray), missing);
}
/**
* A general method to find missing values from an integer array in Java.
* This method will work even if array has more than one missing element.
*/
private static void printMissingNumber(int[] numbers, int count) {
int missingCount = count - numbers.length;
BitSet bitSet = new BitSet(count);

for (int number : numbers) {
bitSet.set(number - 1);
}

System.out.printf("Missing numbers in integer array %s, with total number %d is %n",
Arrays.toString(numbers), count);
int lastMissingIndex = 0;

for (int i = 0; i < missingCount; i++) {
lastMissingIndex = bitSet.nextClearBit(lastMissingIndex);
System.out.println(++lastMissingIndex);
}

}