100 points interview

points.java

import java.util.Map;
import java.util.HashMap;
import java.lang.Character;

public class points {

  private static Map<Character, Integer> pointsMap = null;

  private static void populateMap() {
    pointsMap.put('a', 1);
    pointsMap.put('b', 2);
    pointsMap.put('q', 17);
    pointsMap.put('u', 21);
    pointsMap.put('r', 18);
    pointsMap.put('t', 20);
    pointsMap.put('e', 5);
    // z 26, y 25, x 24, w 23, v 22, u 21, t 20, s 19, r 18, q 17
    // ...
  }

  public static void main(String[] args) {
    if (pointsMap == null) {
      pointsMap = new HashMap(26);
      populateMap();
    }

    points p = new points();

    System.out.println("100 Points in \"quarter\" " + p.isOneHundred("quarter"));
    System.out.println("100 Points in \"hello\" " + p.isOneHundred("hello"));
    System.out.println("100 Points in \"\" " + p.isOneHundred(""));
  }

  public points points() {
    // if (pointsMap == null) {
    //   pointsMap = new HashMap(26);
    //   populateMap();
    // }
    return points();
  }

  public boolean isOneHundred(String str) {

    int sum = 0;

    for (int i = 0; i < str.length(); i++) {
      char c = str.charAt(i);
      // Find value
      Integer value = pointsMap.get(c);
      if (value == null) {
        continue;
      }
      // Add to sum
      sum += value;
      if (sum > 100) {
        return false;
      }
    }

    if (sum == 100) {
      return true;
    }
    return false;
  }

}