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NSMutableArray *sourceArray = [NSMutableArray arrayWithObjects:@(3), @(5), @(7), @(9), @(2), @(4), @(8), @(6), nil];
//选择排序
for (int i = 0; i < sourceArray.count - 1; i++)
{
for (int j = i+1; j < sourceArray.count; j++)
{
NSInteger baseIdx = i;
NSInteger moveIdx = j;
NSNumber* baseNum = [sourceArray objectAtIndex:baseIdx];
NSNumber* moveNum = [sourceArray objectAtIndex:moveIdx];
if (baseNum.intValue > moveNum.intValue)
{
[sourceArray exchangeObjectAtIndex:baseIdx withObjectAtIndex:moveIdx];
}
}
}
//验证结果
[sourceArray enumerateObjectsUsingBlock:^(id _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
NSLog(@"%d:%@", idx, obj);
}];
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原文地址:http://www.cnblogs.com/piaoliuping/p/5482567.html