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RankSystem.java
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RankSystem.java
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package kyu4;
/**
* 4 kyu - Codewars style ranking system.
*
* https://www.codewars.com/kata/51fda2d95d6efda45e00004e/java
*
*
* DESCRIPTION:
* Write a class called User that is used to calculate the amount that a user will progress through a ranking system similar to the one Codewars uses.
*/
public class RankSystem {
int rank = -8;
int progress = 0;
public void incProgress(int rank) {
if (rank < -8 || rank > 8 || rank == 0) {
throw new IllegalArgumentException("Invalid rank value: " + this.rank);
}
if (this.rank < 0 && rank > 0) {
rank--;
}
if (this.rank > 0 && rank < 0) {
rank++;
}
if (this.rank == rank) {
this.progress += 3;
}
if (this.rank - 1 == rank) {
this.progress += 1;
}
if (this.rank - 2 >= rank) {
this.progress += 0;
}
if (this.rank < rank) {
int d = rank - this.rank;
this.progress += (10 * d * d);
}
while (this.progress >= 100 && this.rank < 8) {
if (++this.rank == 0) {
this.rank++;
}
this.progress -= 100;
}
if (this.rank == 8) {
this.progress = 0;
}
}
}