Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Assignment: Enhancing Dice Roll Stats Calculator Program

Introduction:

The project involves creating a program to roll pairs of dice, gathering statistics on the outcomes. Probability differs in the roll of two dice compared to a single die due to varied combinations.

Dice Roll Series:

  • User greeted with "Welcome to the Dice Roll Stats Calculator!" and prompted to specify rolls.
  • Java classes: DiceRoller, Indicator, Validator.
  • DiceRoller:
    • Arrays: rollSeries (captures results), statIndicators (stores statistical indicators).
    • Constructor rolls dice as per user request.
    • Methods collect stats and print the report.
  • Indicator class:
    • Contains dicePairTotal and dicePairCount.

Displaying Results:

  • Sort statIndicators array before display.
  • Indicator objects sortable by dicePairCount (implements Comparable).
  • Example output:

    -----------------------
    dice
    pair   roll
    total  count   percent
    ----   ------  --------
    7      5       50%
    10     2       20%
    4      2       20%
    2      1       10%

    Tasks:

    1. Exclude combinations with zero roll counts.
    2. Add a descriptive report header.
    3. Calculate and display the percentage of roll counts within the series.


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