Javascript Program for Minimum move to end operations to make all strings equal Last Updated : 23 Sep, 2024 Summarize Comments Improve Suggest changes Share Like Article Like Report Given n strings that are permutations of each other. We need to make all strings same with an operation that takes front character of any string and moves it to the end.Examples: Input : n = 2 arr[] = {"molzv", "lzvmo"}Output : 2Explanation: In first string, we removefirst element("m") from first string and append it end. Then we move second characterof first string and move it to end. So after2 operations, both strings become same.Input : n = 3 arr[] = {"kc", "kc", "kc"}Output : 0Explanation: already all strings are equal.The move to end operation is basically left rotation. We use the approach discussed in check if strings are rotations of each other or not to count number of move to front operations required to make two strings same. We one by one consider every string as the target string. We count rotations required to make all other strings same as current target and finally return minimum of all counts.Below is the implementation of above approach. JavaScript // Javascript program to make all // strings same using move // to end operations. // Returns minimum number of // moves to end operations // to make all strings same. function minimunMoves(arr, n) { let ans = Number.MAX_VALUE; for (let i = 0; i < n; i++) { let curr_count = 0; // Consider s[i] as target // string and count rotations // required to make all other // strings same as str[i]. let tmp = ""; for (let j = 0; j < n; j++) { tmp = arr[j] + arr[j]; // find function returns the // index where we found arr[i] // which is actually count of // move-to-front operations. let index = tmp.indexOf(arr[i]); // If any two strings are not // rotations of each other, // we can't make them same. if (index == arr[i].length) return -1; curr_count += index; } ans = Math.min(curr_count, ans); } return ans; } // Driver code let arr = ["xzzwo", "zwoxz", "zzwox", "xzzwo"]; let n = arr.length; console.log(minimunMoves(arr, n)); Output5 Complexity Analysis:Time Complexity: O(N3) (N2 due to two nested loops used and N is for the function indexOf() used the inner for loop)Please refer complete article on Minimum move to end operations to make all strings equal for more details! Comment More infoAdvertise with us Next Article Javascript Program to Modify a string by performing given shift operations K kartik Follow Improve Article Tags : JavaScript rotation Similar Reads Minimum move to end operations to make all strings equal Given n strings that are permutations of each other. We need to make all strings same with an operation that takes front character of any string and moves it to the end. Examples: Input: n = 2, arr[] = {"molzv", "lzvmo"}Output: 2Explanation: In first string, we remove first element("m") from first s 13 min read Javascript Program to Modify a string by performing given shift operations Given a string S containing lowercase English alphabets, and a matrix shift[][] consisting of pairs of the form{direction, amount}, where the direction can be 0 (for left shift) or 1 (for right shift) and the amount is the number of indices by which the string S is required to be shifted. The task i 3 min read Javascript Program to Minimize characters to be changed to make the left and right rotation of a string same Given a string S of lowercase English alphabets, the task is to find the minimum number of characters to be changed such that the left and right rotation of the string are the same. Examples: Input: S = “abcdâ€Output: 2Explanation:String after the left shift: “bcdaâ€String after the right shift: “dabc 3 min read Minimize characters to be changed to make the left and right rotation of a string same Given a string S of lowercase English alphabets, the task is to find the minimum number of characters to be changed such that the left and right rotation of the string are the same. Examples: Input: S = “abcdâ€Output: 2Explanation:String after the left shift: “bcdaâ€String after the right shift: “dabc 8 min read Minimum rotations required to get the same string Given a string, we need to find the minimum number of rotations required to get the same string. Examples: Input : s = "geeks" Output : 5 Input : s = "aaaa" Output : 1 The idea is based on below post.A Program to check if strings are rotations of each other or not Step 1 : Initialize result = 0 (Her 11 min read Java Program for Minimum move to end operations to make all strings equal Given n strings that are permutations of each other. We need to make all strings same with an operation that takes front character of any string and moves it to the end.Examples: Input : n = 2 arr[] = {"molzv", "lzvmo"} Output : 2 Explanation: In first string, we remove first element("m") from first 3 min read Like