Untuk loop di dalam while loop python

• Pada 10 Oktober 2021
• Oleh Karmehavannan
• Kategori. bersarang sementara loop
• Tag. aliran kontrol

Bersarang while loop dalam bahasa pemrograman Python

Isi

Bahasa pemrograman Python memungkinkan penggunaan loop while di dalam while loop lainnya, ini dikenal sebagai while loop bersarang dalam bahasa pemrograman Python<

Pernyataan

Sintaks loop bersarang-sementara di Python sebagai berikut

Sintaksis

while expression:             
         while expression:    
                 statement(s) 
statement(s)

Bagan alir perulangan while bersarang

Cara kerjanya nested while loop

Dalam perulangan while bersarang di Python, tersedia dua jenis pernyataan while

• Luar while loop
• Lingkaran sementara bagian dalam

Awalnya, Outer loop test expression dievaluasi hanya sekali.

Saat mengembalikan true , aliran kontrol melompat ke loop sementara. the inner while loop executes to completion. However, when the ekspresi pengujian adalah false , aliran kontrol datang . Alur kontrol ini berlanjut hingga while loop and executes again from the outer while loop only once. This flow of control persists until ekspresi pengujian loop luar false .

Setelah itu, jika test ekspresi dari loop luar adalah false, the flow of control skips the execution and goes to rest.

Contoh

Program 1

i=1
while i<=3 :
    print(i,"Outer loop is executed only once")
    j=1
    while j<=3:
        print(j,"Inner loop is executed until to completion")
        j+=1
    i+=1;

Ketika kode di atas dijalankan, menghasilkan hasil sebagai berikut

1, 'Outer loop is executed only once')
(1, 'Inner loop is executed until to completion')
(2, 'Inner loop is executed until to completion')
(3, 'Inner loop is executed until to completion')
(2, 'Outer loop is executed only once')
(1, 'Inner loop is executed until to completion')
(2, 'Inner loop is executed until to completion')
(3, 'Inner loop is executed until to completion')
(3, 'Outer loop is executed only once')
(1, 'Inner loop is executed until to completion')
(2, 'Inner loop is executed until to completion')
(3, 'Inner loop is executed until to completion')

Perulangan while tak terbatas dengan Python

while(True):
    print("Statements of outer loop is executed only once");
    //#then flow of control enter the inner loop
    while(True):
        print("Statements of inner loop is executed until to complition");
        //#the loop executed until the execution is false
        //#this is a infinite loop

Ketika kode di atas dijalankan, menghasilkan hasil sebagai berikut

Statements of outer loop is executed only once
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
Statements of inner loop is executed until to complition
.....................
.....................

Lebih Banyak Contoh untuk perulangan while bersarang di Python

Program 1

Menampilkan tabel perkalian menggunakan nested while dalam bahasa Python

//#this is a program to display multiplication table
//#example for nested-while loop in Python
i=1
while i<=10:
  j=1
  while j<=12:
        print i*j,
        j+=1
  i+=1
  print "\n"

Ketika kode di atas dijalankan, menghasilkan hasil sebagai berikut

1   2  3  4  5  6  7  8  9 10 11   12 
2   4  6  8 10 12 14 16 18 20 22   24 
3   6  9 12 15 18 21 24 27 30 33   36 
4   8 12 16 20 24 28 32 36 40 44   48 
5  10 15 20 25 30 35 40 45 50 55   60 
6  12 18 24 30 36 42 48 54 60 66   72 
7  14 21 28 35 42 49 56 63 70 77   84 
8  16 24 32 40 48 56 64 72 80 88   96 
9  18 27 36 45 54 63 72 81 90 99   108 
10 20 30 40 50 60 70 80 90 100 110 120

Program 2

Menampilkan tabel perkalian menggunakan nested while dalam bahasa Python

#this is a program to display multiplication table
#example for nested while loop in Python
i=1
while i<=5:
  j=1
  while j<=5:
        print i,"*",j,'=',i*j
        j+=1
  i+=1
  print "\n"

Ketika kode di atas dijalankan, menghasilkan hasil sebagai berikut

1 * 1 = 1
1 * 2 = 2
1 * 3 = 3
1 * 4 = 4
1 * 5 = 5


2 * 1 = 2
2 * 2 = 4
2 * 3 = 6
2 * 4 = 8
2 * 5 = 10


3 * 1 = 3
3 * 2 = 6
3 * 3 = 9
3 * 4 = 12
3 * 5 = 15


4 * 1 = 4
4 * 2 = 8
4 * 3 = 12
4 * 4 = 16
4 * 5 = 20


5 * 1 = 5
5 * 2 = 10
5 * 3 = 15
5 * 4 = 20
5 * 5 = 25

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Terkait

Bisakah saya menjalankan for loop di dalam while loop?

Bagaimana Anda menggunakan for loop di dalam loop?