Add problem description at HighPrecisionNumber

UVa/HighPrecisionNumber.java

@@ -1,6 +1,45 @@
 
+/**
+ * A number with 30 decimal digits of precision can be represented by a structure type as shown in the
+ * examples below. It includes a 30-element integer array (digits), a single integer (decpt) to represent
+ * the position of the decimal point and an integer (or character) to represent the sign (+/-).
+ * Your task is to write a program to calculate the sum of high-precision numbers.
+ * Input
+ * The first line contains a positive integer n (1 ≤ n ≤ 100) indicating the number of groups of highprecision
+ * numbers (maximum 30 significant digits). Each group includes high-precision numbers (one
+ * number in a line) and a line with only 0 indicating the end of each group. A group can contain 100
+ * numbers at most.
+ * Output
+ * For each group, print out the sum of high-precision numbers (one value in a line). All zeros after the
+ * decimal point located behind the last non-zero digit must be discarded
+ * 
+ * Sample Input
+ * 4
+ * 4.12345678900000000005
+ * -0.00000000012
+ * 0
+ * -1300.1
+ * 1300.123456789
+ * 0.0000000012345678912345
+ * 0
+ * 1500.61345975
+ * -202.004285
+ * -8.60917475
+ * 0
+ * -218.302869584
+ * 200.0000123456789
+ * 0
+ * 
+ * Sample Output
+ * 4.12345678888000000005
+ * 0.0234567902345678912345
+ * 1290
+ * -18.3028572383211
+ */
+
 //https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2921
 
+
 import java.math.BigDecimal;
 import java.util.Scanner;