定义下标存储最小的值的下标
int[]c={1,3,42,1,23,4,5};
for (int i = 0; i < c.Length-1; i++) {
int minIndex = i;//下标存储每一轮最小的数
int temp;
for (int j = i + 1; j < c.Length; j++) {
if (c[i] > c[j]) {
temp = i;
minIndex = j;
j = temp;
}
}
c[i] = c[minIndex];
}