java 阶乘和(1+2+3...+100)

public class Test{public static void main(String[] args){System.out.println("阶乘:"+jieCheng(5));System.out.println("相加:"+f(100));}public static int jieCheng(int i){if(i==1)return 1;else return i*jieCheng(i-1);}public static int f(int i){if(i==1)return 1;else return i+f(i-1);}}

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