public class Test { public static void main(String[] args) { int value = 10; String s = Integer.toString(value, 2); StringBuffer str = new StringBuffer(); for (int i = 0; i < s.length(); i++) { if (i > 0) { str.append("+"); } str.append(s.charAt(i) + "*2^" + (s.length() - i - 1)); } System.out.println(str); //统计str中1的个数 int count = 0; for(int i=0;i<str.length();i++){ if(str.charAt(i)=='1'){ count++; } } System.out.println(count); } }
public class Transform { public static void main(String a[]){ int n=4,count=0,digit=0; while(n>0){ if(n%2==1) count++; n/=2; digit++; } for(int i=0;i<digit;i++){ String s=i+""; for(int j=0;j<s.length();j++){ if(s.charAt(j)=='1'){ count++; } } } System.out.println(count); } }
public class Test {
public static void main(String[] args) {
int value = 10;
String s = Integer.toString(value, 2);
StringBuffer str = new StringBuffer();
for (int i = 0; i < s.length(); i++) {
if (i > 0) {
str.append("+");
}
str.append(s.charAt(i) + "*2^" + (s.length() - i - 1));
}
System.out.println(str);
//统计str中1的个数
int count = 0;
for(int i=0;i<str.length();i++){
if(str.charAt(i)=='1'){
count++;
}
}
System.out.println(count);
}
}
public static void main(String a[]){
int n=4,count=0,digit=0;
while(n>0){
if(n%2==1)
count++;
n/=2;
digit++;
}
for(int i=0;i<digit;i++){
String s=i+"";
for(int j=0;j<s.length();j++){
if(s.charAt(j)=='1'){
count++;
}
}
}
System.out.println(count);
}
}