Find Region and Calculate Region Average
若有一數列為
1.0,
0.0,
0.0,
4.2,
3.1,
4.8,
0.0,
7.1,
0.0,
1.0,
2.0,
0.0,
0.0,
1.5,
0.0,
1,1
欲尋找此數列 不為零的群組，並計算此群組的平均
1 1.0, avg = 1.0
0.0,
0.0,
2 4.2,
2 3.1, avg = (4.2+3.1+4.8)/3
2 4.8,
0.0,
3 7.1, avg = 7.1
0.0,
4 1.0, avg = (1.0 + 2.0) /2
4 2.0,
0.0,
0.0,
5 1.5, avg = 1.5
0.0,
6 1,1 avg = 1.1
void main()
{
int i = 0, preFlag = 0, curFlag = 0;
float fsum = 0.0f;
int n = 0, nReg = 0;
float af[16] = {
1.0,
0.0,
0.0,
4.2,
3.1,
4.8,
0.0,
7.1,
0.0,
1.0,
2.0,
0.0,
0.0,
1.5,
0.0,
1.1
};
for (i = 0 ; i <16; i++)
{
curFlag = (af[i] == 0.0 ? 0 : 1);
if (preFlag == 0 && curFlag == 1)
{
nReg++;
}
if (curFlag == 1)
{
fsum += af[i];
n++;
printf("reg %d : %.2f\n", nReg, af[i]);
}
if (preFlag == 1 && curFlag == 0 || (curFlag == 1 && (i == 15)))
{
printf("avg:%.2f\n", fsum/n);
fsum = 0;
n = 0;
}
preFlag = curFlag;
}
printf("Total Regions:%d\n", nReg);
}
輸出
reg 1 : 1.00
avg:1.00
reg 2 : 4.20
reg 2 : 3.10
reg 2 : 4.80
avg:4.03
reg 3 : 7.10
avg:7.10
reg 4 : 1.00
reg 4 : 2.00
avg:1.50
reg 5 : 1.50
avg:1.50
reg 6 : 1.10
avg:1.10