How to Print Pattern in PythonIn Python, for loop is used to print the various patterns. Printing the various patterns are most common asked programming questions in the interview. The multiple for loops are used to print the patterns where the first outer loop is used to print the number of rows, and the inner loop is used to print the number of columns. Most of the patterns use the following concepts.
In this tutorial, we will discuss a few common patterns. Print Pyramid, Star, and diamond pattern in PythonIn this section, we will learn the common pyramid patterns. Pattern - 1: Simple pyramid patternExample - Output: Enter the number of rows: 5 * * * * * * * * * * * * * * * Explanation: In the above code, we have initialized the n variable to enter the number of rows for the pattern. We entered n = 5, the range of outer for loop will be 0 to 4.
Pattern - 2: Reverse right angle pyramidExample - Output: Enter the number of rows: 5 * * * * * * * * * * * * * * * Pattern - 3: Printing Downward half - PyramidCode - Output: Enter the number of rows: 5 * * * * * * * * * * * * * * * Pattern - 4: Printing Triangle PyramidCode - Output: Enter the number of rows: 10 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Pattern - 5: Downward Triangle PatternCode - Output: * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Pattern - 6: Diamond Shaped PatternCode - Output: Enter the number of rows: 8 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Pattern - 7: Print two pyramid in a single patternCode - Output: Enter the number of rows: 7 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Pattern - 8: Hourglass PatternCode - Output: Enter the number of rows: 5 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * We have discussed the basic pyramid pattern using for loops. The concept of the pattern depends on the logic and proper use of for loop. Number Pattern in PythonIn this section, we describe a few programs of different types of number patterns. Let's understand the following patterns one by one. Pattern - 1: Number PatternCode - Output: Enter the number of rows: 5 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5 Explanation - In the above code, we have printed the numbers according to rows value. The first row prints a single number. Next, two numbers, prints in the second row, and the next three number prints on the third row and so on. In the Pattern - 2: Half pyramid pattern with the numberCode - Output: Enter the number of rows: 5 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 In the above code, we have printed the column value j in the inner for loop. Pattern - 3: Inverted Pyramid PatternCode - Output: Enter the number of rows: 5 1 1 1 1 1 2 2 2 2 3 3 3 4 4 5 Explanation: In the above code, we have used the reversed loop to print the downward inverted pyramid where number reduced after each iteration. Pattern - 4: Same number Inverted PyramidCode - Output: Enter the number of rows: 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 Pattern - 5: Descending Order of NumberCode - Output: Enter the number of rows: 6 6 6 6 6 6 6 5 5 5 5 5 4 4 4 4 3 3 3 2 2 1 Pattern - 6: Print 1 to 10 numbers in PatternCode - Output: 1 2 3 4 5 6 7 8 9 Pattern - 7: Reverse Pattern from 10 to 1Code - Output: Enter the number of rows: 6 6 5 4 3 2 1 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1 Pattern - 8: Print Odd NumbersCode - Output: Enter the number of rows: 5 1 3 3 5 5 5 7 7 7 7 9 9 9 9 9 Pattern - 9: Square Pattern using with numberCode - Output: Enter the number of rows: 5 1 2 3 4 5 2 2 3 4 5 3 3 3 4 5 4 4 4 4 5 5 5 5 5 5 Pattern - 10: Multiplication Number in ColumnExample: Output: Enter the number of rows: 8 1 2 4 3 6 9 4 8 12 16 5 10 15 20 25 6 12 18 24 30 36 7 14 21 28 35 42 49 In the above section, we have discussed all the basic number patterns. It will make a strong command on Python for loop. We can any type of pattern using for loop. Alphabets and Letters Pattern in PythonAs we know that the, each alphabet has its own ASCII value, so define a character and print it to the screen. Let's understand these patterns by following examples Pattern - 1: Right-angled pattern with charactersCode - Output: The character pattern using the ascii value is: A B C D E F G H I J K L M N O Explanation - In the above code, we have assigned the integer value 65 to asciiValue variable which is an ASCII value of A. We defined for loop to print five rows. In the inner loop body, we converted the ASCII value into the character using the char() function. It will print the alphabets, increased the asciiValue after each iteration. Pattern - 2: Right-angled Pattern with Same CharacterCode - Output: The character pattern using the ascii value is: Enter the ASCII value to print pattern: 75 K K K K K K K K K K K K K K K Pattern - 3: Display letter of the word in PatternCode - Output: J Ja Jav Java JavaT JavaTp JavaTpo JavaTpoi JavaTpoin JavaTpoint We can use any word to print the characters. Pattern - 5: Equilateral triangle pattern with charactersCode - Output: Print equilateral triangle Pyramid with characters A B C D E F G H I J K L M N O In this article, we have discussed all basic pattern programs. These patterns are commonly asked during the interview and it is also helpful to understand the concept of Python for loop. Once we get the logic of the program, we can print the any pattern using the Python loops. |
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