OC 冒泡排序 -- 核心代码

//冒泡 核心代码

for (int i = 0; i < array.count - 1; i++) {

int a = [array[i] intValue];

for (int j = i + 1; j < array.count; j++) {

int b = [array[j]  intValue];

if (a > b) {

[array exchangeObjectAtIndex:i withObjectAtIndex:j];

}

}

}