Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Chữa bài #1

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Chữa bài #1

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
196 changes: 127 additions & 69 deletions bt4.js
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,110 +1,168 @@
//1.

// let n = Number(prompt('Nhap so N'));
// let n = Number(prompt("Nhap so N"));

// let tc = 0;
// let tl = 0;
// for (let i = 0;i<=n;i+=2) {tc=tc+i};
// for (let i1= 1;i1<=n;i1+=2) {tl=tl+i1};

// for (let i = 0; i <= n; i += 2) {
// tc = tc + i;
// }

// for (let i1 = 1; i1 <= n; i1 += 2) {
// tl = tl + i1;
// }

// console.log(`Tong cac so chan trong doan tu 1 den N: ${tc}
// Tong cac so le trong doan tu 1 den N : ${tl}`);


//2.

// let n = Number(prompt('Nhap so N'));
// let n = Number(prompt("Nhap so N"));
// let snt = true;
// if ((Math.floor(n)!=n) || n<=1) {console.log('N phai la so tu nhien >1')}
// else {for (let i=2;i<=Math.sqrt(n);i++) {
// if (n%i == 0) {snt = false;break}
// }
// }
// console.log(snt);

// if (Math.floor(n) != n || n <= 1) {
// console.log("N phai la so tu nhien >1");
// } else {
// for (let i = 2; i <= Math.sqrt(n); i++) {
// if (n % i == 0) {
// snt = false;
// break;
// }
// }
// }
// console.log(snt); // B nên cho in kết quả vào nhánh else để tránh in "true" mặc dù ko thỏa mãn điều kiện

//3.

// let n = Number(prompt('Nhap so N'));

// for (let x=0;x<=n;x++) {
// let snt = true;
// if (x < 2) {snt = false}
// else if (x == 2){snt = true}
// else {for (let i = 2; i <= Math.sqrt(x); i++)
// {if (x%i == 0) {snt = false;
// break;}
// }
// }
// if (snt == true) {console.log(x)}
// }

// let n = Number(prompt("Nhap so N"));

// for (let x = 0; x <= n; x++) {
// let snt = true;
// if (x < 2) {
// snt = false;
// } else if (x == 2) {
// snt = true;
// } else {
// for (let i = 2; i <= Math.sqrt(x); i++) {
// if (x % i == 0) {
// snt = false;
// break;
// }
// }
// }
// if (snt == true) {
// console.log(x);
// }
// }

//4.


// let a = 1;
// let b = 0;
// let c
// for (let n = (Number(prompt("nhap n"))-1);n>=0; n--) {c = a; a = a+b; b = c};
// console.log(b)
// let c;
// for (let n = Number(prompt("nhap n")) - 1; n >= 0; n--) {
// c = a;
// a = a + b;
// b = c;
// }
// console.log(b);

//5.

// let a = 0;

// while (true) {
// let n = Number(prompt('Nhap n'));
// if (n>=0) {a=a + n}
// else {break};}
// console.log(`Tong cac so da nhap = ${a}`);
// let n = Number(prompt("Nhap n"));

// if (n >= 0) {
// a = a + n;
// } else {
// break;
// }
// }
// console.log(`Tong cac so da nhap = ${a}`);

//6.

// let ss = prompt('Nhap chuoi bat ki');
// let xx ='';
// for (let i=ss.length-1 ; i>=0; i--) {xx=xx+ss[i]};
// if (ss==xx) {console.log('chuoi doi xung')}
// else {console.log('Chuoi khong doi xung')};
// let ss = prompt("Nhap chuoi bat ki");
// let xx = "";

// for (let i = ss.length - 1; i >= 0; i--) {
// xx = xx + ss[i];
// }

// if (ss == xx) {
// console.log("chuoi doi xung");
// } else {
// console.log("Chuoi khong doi xung");
// }

//7.

// let m = Number(prompt('Nhap chieu dai'));
// let n = Number(prompt('Nhap chieu rong'));
// let hcn ='';
// for (let i=1;i<=m;i++) {for (let x=1;x<=n;x++) {hcn=hcn+'*'};hcn=hcn+'\n'};
// let m = Number(prompt("Nhap chieu dai"));
// let n = Number(prompt("Nhap chieu rong"));

// let hcn = "";

// for (let i = 1; i <= m; i++) {
// for (let x = 1; x <= n; x++) {
// hcn = hcn + "*";
// }
// hcn = hcn + "\n";
// }
// console.log(hcn);

//8.

// let a = Number(prompt('Tong so ga va cho'));
// let b = Number(prompt('Tong so chan'));
// let x = (4*a-b)/2;
// let a = Number(prompt("Tong so ga va cho"));
// let b = Number(prompt("Tong so chan"));

// let x = (4 * a - b) / 2;
// let y = 36 - x;
// if ((4*a-b)>=0 && (2*a)<=b && Math.floor((4*a-b)/2)==((4*a-b)/2)) {
// console.log(`So ga la : ${x}`);
// console.log(`So cho la : ${y}`);}
// else {console.log('Ko co ket qua')};

// if (
// 4 * a - b >= 0 &&
// 2 * a <= b &&
// Math.floor((4 * a - b) / 2) == (4 * a - b) / 2
// ) {
// console.log(`So ga la : ${x}`);
// console.log(`So cho la : ${y}`);
// } else {
// console.log("Ko co ket qua");
// }

//9. ax + by = c
// a1x+ b1y = c1
// (a-a1)x + (b-b1)y = c-c1

// let a = Number(prompt('Nhap a'));
// let b = Number(prompt('Nhap b'));
// let c = Number(prompt('Nhap c'));
// let a1 = Number(prompt('Nhap a1'));
// let b1 = Number(prompt('Nhap b1'));
// let c1 = Number(prompt('Nhap c1'));
// let x = (c-c1)/(a-a1);
// let y = (c-c1)/(b-b1);
// let y1 = (c-c1)/(b-b1) +'-'+ (((a-a1)/(b-b1))+'*x')


// if ((a-a1)==0 && (b-b1)==0 && (c-c1)==0) {console.log(`x co vo so nghiem
// y co vo so nghiem`)}
// else if ((a-a1)==0 && (b-b1)==0 && (c-c1)!==0) {console.log(`PT vo nghiem`)}
// else if ((a-a1)!==0 && (b-b1)==0) {console.log(`x = ${x}
// y co vo so nghiem`)}
// else if ((a-a1)==0 && (b-b1)!==0) {console.log(`x co vo so nghiem
// y = ${y}`)}
// else if ((a-a1)!==0 && (b-b1)!==0) {console.log(`X co vo so nghiem
// y = ${y1}`)};
// let a = Number(prompt("Nhap a"));
// let b = Number(prompt("Nhap b"));
// let c = Number(prompt("Nhap c"));

// let a1 = Number(prompt("Nhap a1"));
// let b1 = Number(prompt("Nhap b1"));
// let c1 = Number(prompt("Nhap c1"));


// // B check lại thuật toán giải nhé, mình test thử thấy kết quả không đúng

// let x = (c - c1) / (a - a1);
// let y = (c - c1) / (b - b1);
// let y1 = (c - c1) / (b - b1) + "-" + ((a - a1) / (b - b1) + "*x");

// if (a - a1 == 0 && b - b1 == 0 && c - c1 == 0) {
// console.log(`x co vo so nghiem
// y co vo so nghiem`);
// } else if (a - a1 == 0 && b - b1 == 0 && c - c1 !== 0) {
// console.log(`PT vo nghiem`);
// } else if (a - a1 !== 0 && b - b1 == 0) {
// console.log(`x = ${x}
// y co vo so nghiem`);
// } else if (a - a1 == 0 && b - b1 !== 0) {
// console.log(`x co vo so nghiem
// y = ${y}`);
// } else if (a - a1 !== 0 && b - b1 !== 0) {
// console.log(`X co vo so nghiem
// y = ${y1}`);
// }