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public static void main(String[] args) { // 1!+2!+...+20! long sum = 0; for (int i = 1; i <= 20; i++) { int cursum = 1; for (int j = 1; j <= i; j++) { 阅读全文
posted @ 2022-03-04 08:53
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public static void main(String[] args) { //两种声明写法 // int a[][][] = {{{1, 2}, {3, 4, 5}}, {{6, 7}, {8, 9, 10, 11}}}; int[][][] a = {{{1, 2}, {3, 4, 5}} 阅读全文
posted @ 2022-03-04 08:52
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public static void main(String[] args ){ int i = 8; String s2 = Integer.toString(i,2); System.out.println("2进制为："+s2); // -- 1000 int sum = 0; for (in 阅读全文
posted @ 2022-03-04 08:51
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