arrays - Difference between subarray, subset & subsequence -



arrays - Difference between subarray, subset & subsequence -

i'm bit confused between subarray , subsequence & subset

if have {1,2,3,4}

then

subsequence can 1,2,4 or {2,4} etc. can omit elements maintain order. subarray be( subarray of size 3) {1,2,3} {2,3,4} subset?

i'm bit confused between these 3.

in opinion, if given pattern array, called subarray means contiguous subarray.

for example, if given {1, 2, 3, 4}, subarray can be

{1, 2, 3} {2, 3, 4} etc.

while given pattern sequence, subsequence contain elements subscripts increasing in original sequence.

for example, {1, 2, 3, 4}, subsequence can be

{1, 3} {1，4} etc.

while given pattern set, subset contain possible combinations of original set.

for example, {1, 2, 3, 4}, subset can be

{1} {2} {3} {4} {1, 2} {1, 3} {1, 4} {2, 3} etc.

subset arrays subsequence

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