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交作业啦

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杨森-ys

#1 Created at ... [Delete] [Delete and Lock User]

public class WhileDemo {

public static void main(String[] args) {

int sum = 0;

        int m = 20;

int n = 100;

// 使用do while计算M+...+N:

do {

sum = sum + m;

m++;

} while (m <= n);

System.out.println(sum);

}

}


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