[topcoder]TallPeople

水题。http://community.topcoder.com/stat?c=problem_statement&pm=2923&rd=5854

一开始错了是因为理解错题意。还有就是初始化min应该设为Integer.MAX_VALUE，而不是相反。

public class TallPeople {
	public int[] getPeople(String[] people) {
		int min = Integer.MAX_VALUE;
		int max = Integer.MIN_VALUE;
		int len1 = people.length;
		if (len1 == 0) return null;
		String[] hgts = people[0].split(" ");
		int len2 = hgts.length;
		if (len2 == 0) return null;
		int mx[][] = new int[len1][len2];

		for (int i = 0; i < len1; i++) {
			String line = people[i];
			String[] heights = line.split(" ");
			int _min = Integer.MAX_VALUE;
			for (int j = 0; j < len2; j++) {
				int tmp = Integer.parseInt(heights[j]);
				mx[i][j] = tmp;
				if (tmp < _min) _min = tmp;
			}
			if (_min > max) max = _min;
		}
		for (int j = 0; j < len2; j++) {
			int _max = Integer.MIN_VALUE;
			for (int i = 0; i < len1; i++) {
				if (mx[i][j] > _max) _max = mx[i][j];
			}
			if (_max < min) min = _max;
		}

		return new int[] {max, min};
	}
}