IOSOC/C array of immutable variables

1. Review C Array sorting

int a[6] = {1,4,3,5,6,2};

Choose

for (int i =0; i<6-1; i++) {

for (int j = i+1; j<6;j++) {

if (A[i]>a[j]) {

int tmp = A[i];

A[i] = A[j];

A[J] = tmp;

}

}

}

for (int i=0;i<6;i++) {

printf ("a[%d] =%d\n", i,a[i]);

}

Nsarray sort

Nsarray * array = @[@ "1", @ "4", @ "5", @ "7", @ "2", @ "9"];

The current put-back value is an array, which is provided by default, and is not frequently used in compliance with limitations of small scale

[Array sortedarrayusingselector: @selector (compare:)];

[Array sortedarraywithoptions:<# (nssortoptions) #> Usingcomparator:<#^nscomparisonresult (ID obj1, id obj2 ) Cmptr#>]

[Array sortedarrayusingfunction:<# (Nsinteger (*) (__strong ID, __strong id, void *)) #> context:<# (void *) # ;]

Nsmutablearray * arr2 = [[Nsmutablearray Alloc]initwitharray:array];

for (int i = 0; i<[arr2 count]-1; i++) {

for (int j = i+1; j<[arr2 count]; j + +) {

if ([Arr2[i] intvalue]) > ([Arr2[j] intvalue]) {

NSString * str = arr2[i];

Arr2[i] = Arr2[j];

ARR2[J] = str;

}

}

}

NSLog (@ "%@", arr2);

IOSOC/C array of immutable variables