C#•2y ago

❔ Permut array's values

Hello, is there a convenient way to swap array values in their array, for example transforming a {1,2,3,4} into a {1,4,2,3} I dunno. Because when I think of this I believe that a need to create a copy of the first array as a reference before swapping the values, but maybe there is a better way.

5 Replies

TravestyOfCode•2y ago

You can save the first value in a temp variable, then assign the second value in the first value place, then assign the second location the value in temp.

var temp = array[index1];
array[index1] = array[index2];
array[index2] = temp;

var temp = array[index1];
array[index1] = array[index2];
array[index2] = temp;

ero•2y ago

(array[i1], array[i2) = (array[i2], array[i1]);

(array[i1], array[i2) = (array[i2], array[i1]);

MODiX•2y ago

thinker227#0000

REPL Result: Success

var xs = new[] {1,2,3,4,5};
(xs[1], xs[2]) = (xs[2], xs[1]);
xs

var xs = new[] {1,2,3,4,5};
(xs[1], xs[2]) = (xs[2], xs[1]);
xs

Result: int[]

[
  1,
  3,
  2,
  4,
  5
]

[
  1,
  3,
  2,
  4,
  5
]

Compile: 427.710ms | Execution: 58.419ms | React with ❌ to remove this embed.

Angius•2y ago

Tuple swap FTW

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Permut array's values