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Happy Ladybugs is a board game having the following properties: * The board is represented by a string, , of length . The character of the string, , denotes the cell of the board. * If is an underscore (i.e., _), it means the cell of the board is empty. * If is an uppercase English
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Bob has a strange counter. At the first second, it displays the number . Each second, the number displayed by the counter decrements by until it reaches . The counter counts down in cycles. In next second, the timer resets to and continues counting down. The diagram below shows the counter values
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Manasa is out on a hike with friends. She finds a trail of stones with numbers on them. She starts following the trail and notices that any two consecutive stones' numbers differ by one of two values. Legend has it that there is a treasure trove at the end
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An integer is a divisor of an integer if the remainder of . Given an integer, for each digit that makes up the integer determine whether it is a divisor. Count the number of divisors occurring within the integer. Note: Each digit is considered to be unique, so each occurrence of
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Flatland is a country with a number of cities, some of which have space stations. Cities are numbered consecutively and each has a road of length connecting it to the next city. It is not a circular route, so the first city doesn't connect with the last city.
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Emma is playing a new mobile game that starts with consecutively numbered clouds. Some of the clouds are thunderheads and others are cumulus. She can jump on any cumulus cloud having a number that is equal to the number of the current cloud plus or . She must avoid the thunderheads.
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Lilah has a string, , of lowercase English letters that she repeated infinitely many times. Given an integer, , find and print the number of letter a's in the first letters of Lilah's infinite string. For example, if the string and , the substring we consider is , the first
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Check Tutorial tab to know how to to solve. You are given a string consisting only of digits 0-9, commas ,, and dots . Your task is to complete the regex_pattern defined below, which will be used to re.split() all of the , and . symbols in . It’s guaranteed that every
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The Utopian Tree goes through 2 cycles of growth every year. Each spring, it doubles in height. Each summer, its height increases by 1 meter. Laura plants a Utopian Tree sapling with a height of 1 meter at the onset of spring. How tall will her tree be after growth
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ABCXYZ company has up to employees. The company decides to create a unique identification number (UID) for each of its employees. The company has assigned you the task of validating all the randomly generated UIDs. A valid UID must follow the rules below: * It must contain at least uppercase English
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Lily likes to play games with integers. She has created a new game where she determines the difference between a number and its reverse. For instance, given the number , its reverse is . Their difference is . The number reversed is , and their difference is . She decides to apply her game to
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A Discrete Mathematics professor has a class of students. Frustrated with their lack of discipline, he decides to cancel class if fewer than some number of students are present when class starts. Arrival times go from on time () to arrived late (). Given the arrival time of each student and a