In java or python i can use for loops to check it underscore i such as
for(i:0;i<100;i++){
for(j:i+1;j<100,j++){
if list[i]=list[j]
list[i]="common value"
}
if arraylist contains["common value"]{
arraylist.remove["common value"]
for java a!forEach, i can't find its underscore i, i don't know which way can express it fv!index like this way in the parenthesis? how to do it?
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