Example: The test table even removed out
local test = { 2, 3, 4, 8, 9, 100, 20, 13, 15, 7, 11}
for i, v in ipairs( test ) do
if v % 2 == 0 then
table.remove(test, i)
end
end
for i, v in ipairs( test ) do
print(i .. "====" .. v)
end
Print Results:
1====3
2====8
3====9
4====20
5====13
6====15
7====7
8====11
There are an even number of results 8,20.
Because each iterator delete an element, then the element automatically moves forward.
Delete the right way:
Method 1: Delete from the back forward
tb={1,2,3,4,5,6,7,8,9,10,11,12,13,14}
for i=#tb,1,-1 do
if tb[i]%2==0 then
table.remove(tb,i)
end
end
Second way: while traversing
i=1
while i<=#tb do
if tb[i]%2==0 then
table.remove(tb,i)
else
i=i+1
end
end