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Translate all code to English (#1836)
* Review the EN heading format. * Fix pythontutor headings. * Fix pythontutor headings. * bug fixes * Fix headings in **/summary.md * Revisit the CN-to-EN translation for Python code using Claude-4.5 * Revisit the CN-to-EN translation for Java code using Claude-4.5 * Revisit the CN-to-EN translation for Cpp code using Claude-4.5. * Fix the dictionary. * Fix cpp code translation for the multipart strings. * Translate Go code to English. * Update workflows to test EN code. * Add EN translation for C. * Add EN translation for CSharp. * Add EN translation for Swift. * Trigger the CI check. * Revert. * Update en/hash_map.md * Add the EN version of Dart code. * Add the EN version of Kotlin code. * Add missing code files. * Add the EN version of JavaScript code. * Add the EN version of TypeScript code. * Fix the workflows. * Add the EN version of Ruby code. * Add the EN version of Rust code. * Update the CI check for the English version code. * Update Python CI check. * Fix cmakelists for en/C code. * Fix Ruby comments
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/**
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* File: recursion.js
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* Created Time: 2023-08-28
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* Author: Gaofer Chou (gaofer-chou@qq.com)
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*/
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/* Recursion */
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function recur(n) {
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// Termination condition
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if (n === 1) return 1;
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// Recurse: recursive call
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const res = recur(n - 1);
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// Return: return result
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return n + res;
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}
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/* Simulate recursion using iteration */
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function forLoopRecur(n) {
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// Use an explicit stack to simulate the system call stack
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const stack = [];
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let res = 0;
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// Recurse: recursive call
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for (let i = n; i > 0; i--) {
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// Simulate "recurse" with "push"
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stack.push(i);
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}
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// Return: return result
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while (stack.length) {
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// Simulate "return" with "pop"
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res += stack.pop();
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}
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// res = 1+2+3+...+n
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return res;
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}
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/* Tail recursion */
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function tailRecur(n, res) {
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// Termination condition
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if (n === 0) return res;
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// Tail recursive call
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return tailRecur(n - 1, res + n);
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}
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/* Fibonacci sequence: recursion */
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function fib(n) {
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// Termination condition f(1) = 0, f(2) = 1
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if (n === 1 || n === 2) return n - 1;
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// Recursive call f(n) = f(n-1) + f(n-2)
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const res = fib(n - 1) + fib(n - 2);
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// Return result f(n)
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return res;
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}
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/* Driver Code */
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const n = 5;
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let res;
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res = recur(n);
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console.log(`Recursion sum result res = ${res}`);
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res = forLoopRecur(n);
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console.log(`Using iteration to simulate recursion sum result res = ${res}`);
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res = tailRecur(n, 0);
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console.log(`Tail recursion sum result res = ${res}`);
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res = fib(n);
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console.log(`The ${n}th Fibonacci number is ${res}`);
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