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EggheadOEvs.rico-ding

Count Pairs Of Similar Strings

Code
Diff
  • import java.util.Arrays;
import java.util.HashSet;

class Solution {

  static int similarPairs(String[] words) {
    var seenWords = new HashSet<String>(Arrays.asList(words));
    return words.length - seenWords.size();
  }

}
    • import static java.util.Collections.addAll;
    • import java.util.Arrays;
    • import java.util.HashSet;
    • class Solution {
    • static int similarPairs(String[] words) {
    • var seenWords = new HashSet<String>(words.length);
    • addAll(seenWords, words);
    • var seenWords = new HashSet<String>(Arrays.asList(words));
    • return words.length - seenWords.size();
    • }
    • }
EggheadOEvs.poacosta87

Add numbers of an array

Code
Diff
  • const addArr = arr => arr.reduce((sum, num) => sum + num, null);
    • const addArr = (arr) => {
    • let sum = 0;
    • for (let i = 0; i < arr.length; i++) {
    • sum += arr[i];
    • }
    • return sum || null;
    • };
    • const addArr = arr => arr.reduce((sum, num) => sum + num, null);
EggheadOEvs.monkey_on_a_keyboard_1

Number - 7

Code
Diff
  • const numMinusSeven = num => Math.ceil(num/7);
    • function numMinusSeven(num) {
    • return Math.ceil(num/7);
    • }
    • const numMinusSeven = num => Math.ceil(num/7);