Suppose we have head of a singly linked list, we have to check whether the values of the nodes are sorted in a strictly ascending order or not.So, if the input is like [2, 61, 105, 157], then the output will be True.To solve this, we will follow these steps −Define a function solve() . This will take headif head.next is null, thenreturn Trueif head.val >= head.next.val, thenreturn Falsereturn solve(head.next)Let us see the following implementation to get better understanding −Example Live Democlass ListNode:    def __init__(self, data, next = None):       self.val = data       self.next = ... Read More

Suppose we have a list of numbers called nums, we have to check whether there are two numbers such that one is a triple of another or not.So, if the input is like nums = [2, 3, 10, 7, 9], then the output will be True, as 9 is the triple of 3To solve this, we will follow these steps −i := 0sort the list nj := 1while j < size of n, doif 3*n[i] is same as n[j], thenreturn Trueif 3*n[i] > n[j], thenj := j + 1otherwise, i := i + 1return FalseLet us see the following implementation ... Read More

Suppose er have a string dictionary, the dictionary is representing a partial lexicographic ordering of ancient astronauts' dictionary. So, if we have a string s, we have to check whether it's a lexicographically sorted string according to this ancient astronaut dictionary or not.So, if the input is like dictionary = "bdc", s = "bbbb h ddd i cccc", then the output will be TrueTo solve this, we will follow these steps −l := size of astro_dictif l is same as 0, thenreturn Truei := 0for each character c in s, doif c in astro_dict, thenwhile i < l and astro_dict[i] ... Read More

Suppose we have a string that is representing a 12-hour clock time with suffix am or pm, and an integer n is also given, we will add n minutes to the time and return the new time in the same format.So, if the input is like s = "8:20pm" and n = 150, then the output will be 10:50pmTo solve this, we will follow these steps −h, m := take the hour and minute part from sh := h mod 12if the time s is in 'pm', thenh := h + 12t := h * 60 + m + nh ... Read More

Suppose we have a string s that is representing a phrase, we have to find its acronym. The acronyms should be capitalized and should not include the word "and".So, if the input is like "Indian Space Research Organisation", then the output will be ISROTo solve this, we will follow these steps −tokens:= each word of s as an arraystring:= blank stringfor each word in tokens, doif word is not "and", thenstring := string concatenate first letter of wordreturn convert string into uppercase stringLet us see the following implementation to get better understanding −Example Live Democlass Solution:    def solve(self, s):   ... Read More

Problem Statement Consider a mobile phone, which is in "eco mode". This mode activates once your battery level reaches 20 percent. In this eco mode, the battery drains two times slower than in normal mode. This means that, in normal mode, if the time consumed by the battery is 1% per minute, then the time taken in eco mode is 1% per 30 seconds (1/2 minute). Scenario Now, when we leave our home, we have 100% of the battery. Then t minutes later we have p percent of battery left. We have to find how many minutes we have until ... Read More

Suppose we have a positive number n, we have to find that we can make n by summing up some non-negative multiple of 3 and some non-negative multiple of 7 or not.So, if the input is like 13, then the output will be True, as 13 can be written as 1*7+2*3 = 13To solve this, we will follow these steps −for i in range 0 to n+1, increase by 7, doif n-i is divisible by 3, thenreturn Truereturn FalseLet us see the following implementation to get better understanding −Example Live Democlass Solution:    def solve(self, n):       for i ... Read More

Suppose we have a number n, we have to construct a list with each number from 1 to n, except when it is multiple of 3 or has a 3, 6, or 9 in the number, it should be the string "no-fill".So, if the input is like 20, then the output will be ['1', '2', 'clap', '4', '5', 'clap', '7', '8', 'clap', '10', '11', 'clap', 'clap', '14', 'clap', 'clap', '17', 'clap', 'clap', '20']To solve this, we will follow these steps −string := "no-fill"ls:= make a list of numbers as string from 1 to nfor i in range 0 to size ... Read More

Suppose we have a string s. Here s is representing a 12-hour clock time with suffixes am or pm, we have to find its 24-hour equivalent.So, if the input is like "08:40pm", then the output will be "20:40"To solve this, we will follow these steps −hour := (convert the substring of s [from index 0 to 2] as integer) mod 12minutes := convert the substring of s [from index 3 to 5] as integerif s[5] is same as 'p', thenhour := hour + 12return the result as hour:minutesLet us see the following implementation to get better understanding −Example Live Democlass Solution: ... Read More

Suppose we have an integer n, where only 1, 2, and 3 these digits are present. We can flip one digit to a 3. Then find the maximum number we can make.So, if the input is like 11332, then the output will be 31332To solve this, we will follow these steps −li := a list by digits of nfor x in range 0 to size of li - 1, doif li[x] is not '3', thenli[x] := '3'return the number by merging digits from lireturn nLet us see the following implementation to get better understanding −Example Live Democlass Solution:    def solve(self, ... Read More