int imin, amin;

for (int i = 0; i < (4 – 1); i++) {
imin = i;
amin=a[imin];
for (int j = (i + 1); j < a.length; j++) {
if (a[j] < amin) {
imin = j; // new index of minimum
amin=a[imin]; // new value of minimum
}
}

if (imin==i) { continue; }
a[imin]=a[i];
a[i]=amin;
}