Programming Articles - Page 1754 of 3363

Suppose we have given function like f(x) = (x^6 + x^2 + 9894845) % 971, now for a given value of x, we have to find the value of f(x).So, if the input is like 5, then the output will be 469To solve this, we will follow these steps −Define a function power_mod(), this will take base, exponent, modulus, base := base mod modulusresult := 1while exponent > 0, do −if exponent is odd, then −result := (result * base) mod modulusbase := (base * base) mod modulusexponent = exponent /2return resultFrom the main method do the following −return power_mod(n, ... Read More

Suppose we have a board of length p and width q; we have to break this board into p*q number of squares such that cost of breaking is as minimum as possible. Cutting cost for each edge will be given.So, if the input is like X_slice = [3, 2, 4, 2, 5], Y_slice = [5, 2, 3]then the output will be 65To solve this, we will follow these steps −res := 0horizontal := 1, vertical := 1i := 0, j := 0while i < m and j < n, doif X_slice[i] > Y_slice[j], thenres := res + X_slice[i] * verticalhorizontal ... Read More

Suppose we have a string s that represents a time in the 24 hours format as HH:MM so that HH will be in range 0 to 23 and MM will be in range 0 to 59, We have to find the next closest time which is a palindrome when read as a string. If there is no such string, then return -1.So, if the input is like "22:22", then the output will be "23:32".To solve this, we will follow these steps −n := size of shour_string := substring of s[from index 0 to 2]minute := substring of s[from index 3 ... Read More

Suppose we have a N*M matrix A, this is the representation of 3D figure. The height of the building at point (i, j) is A[i][j]. We have to find the surface area of the figure.So, if the input is like N = 3, M = 3, A = [[1, 4, 5], [3, 3, 4], [1, 3, 5]], then the output will be 72.To solve this, we will follow these steps −res := 0for i in range 0 to N, dofor j in range 0 to M, doup_side := 0left_side := 0if i > 0, thenup_side := array[i - 1, j]if ... Read More

Suppose we have an array of integers A; we have to find all the values for sum so that for a value sum[i] the array can be divided into sub-arrays of sum sum[i]. If we cannot divide the array into sub-arrays of equal sum then return -1.So, if the input is like A = [2, 4, 2, 2, 2, 4, 2, 6], then the output will be [6, 8, 12] as the array can be divided into sub-arrays of sum 6, 8 and 12. These are as follows: [{2, 4}, {2, 2, 2}, {4, 2}, {6}] [{2, 4, 2}, {2, ... Read More

Suppose we have three sorted arrays A, B, and C (these can be of different sizes), we have to find compute the minimum absolute difference between the maximum and minimum number of any triplet (A[i], B[j], C[k]) such that they are under arrays A, B and C respectively, So, if the input is like A : [ 2, 5, 6, 9, 11 ], B : [ 7, 10, 16 ], C : [ 3, 4, 7, 7 ] , then the output will be 1 as by selecting A[i] = 6 B[j] = 7 and C[k] = 7, we will ... Read More

Suppose we have an array A of n values (elements may not be distinct). We have to find the sum of maximum difference possible from all subsets of given array. Now consider max(s) denotes the maximum value in any subset, and min(s) denotes the minimum value in the set. We have to find the sum of max(s)-min(s) for all possible subsets.So, if the input is like A = [1, 3, 4], then the output will be 9.To solve this, we will follow these steps −n := size of Asort the list Asum_min := 0, sum_max := 0for i in range ... Read More

Suppose we have a given integer N; we have to find the sum of all Truncatable primes less than N. As we know the truncatable prime is a number which is left-truncatable prime (if the leading "left" digit is successively removed, then all resulting numbers are treated as prime) as well as right-truncatable prime (if the last "right" digit is successively removed, then all the resulting numbers are treated as prime). An example of truncatable prime is 9137 as this is lefttruncatable prime because 9137, 137, 37 and 7 are primes. Hence 9137 is a truncatable prime.So, if the input ... Read More

Suppose we have a string, s, and we have another list with few words, these words are of same length. We have to find all starting indices of substring(s) in s that is a concatenation of each word in words exactly once and without any intervening characters.So if the input is like “wordgoodgoodgoodword” and words are ["word", "good"], then the output will be [0, 12]. This is because the substring starting at index 0 and 12 are “wordgood” and “goodword”.To solve this, we will follow these steps −Define a method called ok(), this will take string s, map wordCnt and ... Read More

Suppose we have two strings s1 and s2, we have to find the smallest substring in s1 such that all characters of s2 will be used efficiently.So, if the input is like s1 = "I am a student", s2 = "mdn", then the output will be "m a studen"To solve this, we will follow these steps −N := 26str_len := size of main_str, patt_len := size of patternif str_len < patt_len, thenreturn Nonehash_pat := an array of size N and fill with 0hash_str := an array of size N and fill with 0for i in range 0 to patt_len, dohash_pat[ASCII ... Read More