用while语句求1~100之和 public class Ex3_5 { public static void main(String[] args){ int n=1,sum=0; while(n<=100) { sum+=n; n++; } System.out.println("sum="+sum); }}
MATLAB中求矩阵非零元的坐标: 方法1: index=find(a); [i,j]=ind2sub(size(a),index); disp([i,j]) 方法2: [i,j]=find(a>0|a<0) %列出所有非零元的坐标 [i,j]=find(a==k) %找出等于k值的矩阵元素的坐标 所用函数简介: IND2SUB Multiple subscripts from linear index. IND2SUB is used to determine the equivalent
quake3中求1/sqrt(x)的算法源代码如下(未作任何修改): float Q_rsqrt( float number ) { long i; float x2, y; const float threehalfs = 1.5F; x2 = number * 0.5F; y = number; i = * ( long * ) &y; // evil floating point bit level hacking i = ); // what the fuck? y = * ( floa
package com.swift; public class String_To_Integer_Test { public static void main(String[] args) { /* * 编程求字符串“100”和“150”按十进制数值做差后的结果以字符串形式输出. */ String str1="100"; String str2="150"; int i1=Integer.valueOf(str1); int i2=Integer.valueOf
declare i number:=1; j number:=0; sum1 number:=0;begin while(i<100) loop i:=i+1; j:=2; while(mod(i,j)!=0) loop j:=j+1; if(i=j) then exit; end if; end loop; if(i=j) then sum1:=sum1+i; DBMS_OUTPUT.PUT_LINE(i); end if; end loop; DBMS_OUTPUT.PUT_LINE(SUM