排序

1. 选择排序
   `public class SelectSort {

   public static void main(String[] args) {
   int[] eles = {0, -1, -3, 2, 100, Integer.MAX_VALUE, Integer.MIN_VALUE};
   selectSort(eles);
   System.out.println(Arrays.toString(eles));
   }
   public static void selectSort(int[] eles) {
   int minIdx = 0;
   for (int i = 0; i < eles.length; i++) {
   int min = eles[i];
   for (int j = i + 1; j < eles.length; j++) {
   if (min > eles[j]) {
   min = eles[j];
   minIdx = j;
   }
   }
   swap(eles, i, minIdx);
   }
   }

   private static void swap(int [] eles, int idx1, int idx2) {
   int tmp = eles[idx1];
   eles[idx1] = eles[idx2];
   eles[idx2] = tmp;
   }
   }`