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en/codes/ruby/chapter_computational_complexity/iteration.rb
79 строк
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Yudong Jin
Translate all code to English (#1836)
31 дек 2025, 02:44
Не верифицирован
31 дек 2025, 02:44
2778a6f
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=begin File: iteration.rb Created Time: 2024-03-30 Author: Xuan Khoa Tu Nguyen (ngxktuzkai2000@gmail.com), Cy (9738314@gmail.com) =end ### for loop ### def for_loop(n) res = 0 # Sum 1, 2, ..., n-1, n for i in 1..n res += i end res end ### while loop ### def while_loop(n) res = 0 i = 1 # Initialize condition variable # Sum 1, 2, ..., n-1, n while i <= n res += i i += 1 # Update condition variable end res end ### while loop (two updates) ### def while_loop_ii(n) res = 0 i = 1 # Initialize condition variable # Sum 1, 4, 10, ... while i <= n res += i # Update condition variable i += 1 i *= 2 end res end ### Nested for loop ### def nested_for_loop(n) res = "" # Loop i = 1, 2, ..., n-1, n for i in 1..n # Loop j = 1, 2, ..., n-1, n for j in 1..n res += "(#{i}, #{j}), " end end res end ### Driver Code ### if __FILE__ == $0 n = 5 res = for_loop(n) puts "\nFor loop sum result res = #{res}" res = while_loop(n) puts "\nWhile loop sum result res = #{res}" res = while_loop_ii(n) puts "\nWhile loop (two updates) sum result res = #{res}" res = nested_for_loop(n) puts "\nNested for loop traversal result #{res}" end