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lines changed Original file line number Diff line number Diff line change 18
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public static < T > void reverse(List<T > list) {
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List<T > tmp = new ArrayList<T > (list);
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for (int i = 0 ; i < list. size(); i++ ) {
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- list. set(i, tmp. get(list. size()- i - 1 ));
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+ list. set(i, tmp. get(list. size() - i - 1 ));
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}
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}
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```
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public static void reverse(List<?> list) {
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List<Object > tmp = new ArrayList<Object > (list);
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for (int i = 0 ; i < list. size(); i++ ) {
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- list. set(i, tmp. get(list. size()- i - 1 )); // 编译报错
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+ list. set(i, tmp. get(list. size() - i - 1 )); // 编译报错
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}
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}
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```
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private static < T > void rev(List<T > list) {
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List<T > tmp = new ArrayList<T > (list);
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for (int i = 0 ; i < list. size(); i++ ) {
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- list. set(i, tmp. get(list. size()- i - 1 ));
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+ list. set(i, tmp. get(list. size() - i - 1 ));
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}
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}
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```
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``` java
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Capture . java: 6 : set(int ,capture of ? ) in java.util.List<capture of ?>
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cannot be applied to (int ,java.lang. Object )
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- list. set(i, tmp. get(list. size()- i - 1 ));
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+ list. set(i, tmp. get(list. size() - i - 1 ));
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^
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```
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