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// 10函数功能：按选择法将数组num的元素值按从低到高排序
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void AsSortbyNum(STU stu[], int n, int m)
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{
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int i, j, k, t;
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for (i=0; i<n-1; i++)
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{
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K=i;
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for(j=i+1;j<10;j++)
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{
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if((*compare)(stu[k]num.stu[j].num)) k=j;}
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if(k!=i)
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{t=stu[i].num;stu[i].num=stu[k].num;stu[k].num=t;}
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}
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}
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