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Copy pathTestUtil.java
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60 lines (52 loc) · 1.59 KB
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/**
* Sanqiang Zhao Www.131X.Com Dec 17, 2012
*/
package Util;
import java.util.Calendar;
import java.util.Random;
public class TestUtil {
public static Integer[] intToInteger(int[] arr)
{
Integer[] trans = new Integer[arr.length];
for (int i = 0; i < arr.length; i++) {
trans[i] = arr[i];
}
return trans;
}
public static int[] generateArray(int n) {
return generateArray(n, 100, true);
}
public static int[] generateArray(int n, int max, boolean negative) {
int[] arr = new int[n];
Random r = new Random(Calendar.getInstance().MILLISECOND);
for (int i = 0; i < n; i++) {
int current = r.nextInt(max);
if (negative) {
current -= max / 2;
}
arr[i] = current;
}
return arr;
}
public static String generateArrayString(int n, int max) {
int[] arr = generateArray(n, max, false);
StringBuilder sb = new StringBuilder();
for (int num : arr) {
sb.append(num);
}
return sb.toString();
}
public static int[][] generateMatrix(int height, int width, int max) {
int matrix[][] = new int[height][width];
Random r = new Random(Calendar.getInstance().MILLISECOND);
for (int i = 0; i < height; ++i) {
for (int j = 0; j < width; ++j) {
matrix[i][j] = r.nextInt(max);
}
}
return matrix;
}
public static void main(String[] args) {
System.out.println(generateArrayString(100, 10));
}
}