HACKEREARTH-IMPLEMENTATION
package org.javaaid.hackerrank.solutions.implementation.bruteforce; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Scanner; public class DayOfTheProgrammer { public static void main(String[] args) throws ParseException { Scanner sc = new Scanner(System.in); int y = sc.nextInt(); SimpleDateFormat sdf = new SimpleDateFormat("dd.MM.yyyy"); int d = 243; if (y >= 1700 && y <= 1917) { if (y % 4 == 0) { d = 244; } } else if (y >= 1919 && y <= 2700) { if (y % 400 == 0 || (y % 100 != 0 && y % 4 == 0)) { d = 244; } } else if (y == 1918) { d = 230; } int r = 256 - d; String date = r + "." + 9 + "." + y; System.out.println(sdf.format(sdf.parse(date))); sc.close(); } }
package org.javaaid.hackerrank.solutions.implementation.bruteforce; import java.util.Scanner; public class Pangrams { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String line = sc.nextLine().toLowerCase(); boolean found = true; for (int i = 97; i <= 122; i++) { char ch = (char) i; if (line.indexOf(ch) == -1) { found = false; break; } } System.out.println(found ? "pangram" : "not pangram"); sc.close(); } }
package org.javaaid.hackerrank.solutions.implementation.bruteforce; import java.util.Scanner; public class ClimbingTheLeaderboard { public static void main(String[] args) { Scanner in = new Scanner(System.in); int n = in.nextInt(); int[] scores = new int[n]; scores[0] = in.nextInt(); int k = 1, counter = 0; for (int scores_i = 1; scores_i < n; scores_i++) { int temp = in.nextInt(); if (temp != scores[k - 1]) { scores[k++] = temp; } else { counter++; } } for (int i = scores.length - 1; i >= 0 && counter > 0; i--) { counter--; scores[i] = Integer.MIN_VALUE; } int m = in.nextInt(); for (int alice_i = 0; alice_i < m; alice_i++) { int tmp = in.nextInt(); if (tmp > scores[0]) { System.out.println(1); } else if (tmp < scores[scores.length - 1]) { System.out.println(scores.length + 1); } else { System.out.println(binarySearch(scores, tmp) + 1); } } in.close(); } private static int binarySearch(int[] a, int key) { int lo = 0; int hi = a.length - 1; while (lo <= hi) { int mid = lo + (hi - lo) / 2; if (a[mid] == key) { return mid; } else if (a[mid] < key && key < a[mid - 1]) { return mid; } else if (a[mid] > key && key >= a[mid + 1]) { return mid + 1; } else if (a[mid] < key) { hi = mid - 1; } else if (a[mid] > key) { lo = mid + 1; } } return -1; } }
package org.javaaid.hackerrank.solutions.implementation.bruteforce; import java.util.HashMap; import java.util.Scanner; public class StringsMakingAnagrams { public static int numberNeeded(String first, String second) { HashMap<Character, Integer> hmap = new HashMap<Character, Integer>(); int length = 0; for (int i = 0; i < first.length(); i++) { char c = first.charAt(i); if (hmap.containsKey(c)) { hmap.put(c, hmap.get(c) + 1); } else { hmap.put(c, 1); } } for (int i = 0; i < second.length(); i++) { char c = second.charAt(i); if (hmap.containsKey(c) && hmap.get(c) != 0) { hmap.put(c, hmap.get(c) - 1); length += 2; } } return (first.length() + second.length() - length); } public static void main(String[] args) { Scanner in = new Scanner(System.in); String a = in.next(); String b = in.next(); in.close(); System.out.println(numberNeeded(a, b)); } }
package org.javaaid.hackerrank.solutions.implementation.bruteforce; import java.util.Scanner; public class Encryption { static String encryption(String s) { int length=s.length(); double rows=Math.floor(Math.sqrt(length)); double cols=Math.ceil(Math.sqrt(length)); int len=(int) (rows>cols?rows:cols); String result=""; for(int i=0;i<len;i++) { for(int j=i;j<s.length();j=(int) (j+cols)) { char ch=s.charAt(j); result+=ch; } result+=" "; } return result; } public static void main(String[] args) { Scanner in = new Scanner(System.in); String s = in.next(); String result = encryption(s); System.out.println(result); in.close(); } }
package org.javaaid.hackerrank.solutions.implementation.bruteforce; import java.util.HashMap; import java.util.Scanner; public class MakingAnagrams { public static int numberNeeded(String first, String second) { HashMap<Character, Integer> hmap = new HashMap<Character, Integer>(); int length = 0; for (int i = 0; i < first.length(); i++) { char c = first.charAt(i); if (hmap.containsKey(c)) { hmap.put(c, hmap.get(c) + 1); } else { hmap.put(c, 1); } } for (int i = 0; i < second.length(); i++) { char c = second.charAt(i); if (hmap.containsKey(c) && hmap.get(c) != 0) { hmap.put(c, hmap.get(c) - 1); length += 2; } } return (first.length() + second.length() - length); } public static void main(String[] args) { Scanner in = new Scanner(System.in); String a = in.next(); String b = in.next(); System.out.println(numberNeeded(a, b)); in.close(); } }
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