将一个list均分成n个list
package org.apache.test; import java.util.ArrayList; import java.util.List; public class JavaDemo { /** * 将一个list均分成n个list * * @param source * @return */ public static <T> List<List<T>> averageAssign(List<T> source, int n) { List<List<T>> result = new ArrayList<List<T>>(); int remainder = source.size() % n; //先计算出余数 int number = source.size() / n; // /然后是商 i int offset = 0;//偏移量(用以标识加的余数) for (int i = 0; i < n; i++) { List<T> value; if (remainder > 0) { value = source.subList(i * number + offset, (i + 1) * number + offset + 1); remainder--; offset++; } else { value = source.subList(i * number + offset, (i + 1) * number + offset); } result.add(value); } return result; } }
曹肖扬
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