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| // solution for | |
| // https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sum-all-odd-fibonacci-numbers | |
| const memo = {}; | |
| function fib(n) { | |
| if (n in memo) return memo[n]; | |
| if (n <= 2) return 1; | |
| memo[n] = fib(n - 1) + fib(n - 2); | |
| return memo[n]; | |
| } | |
| function sumFibs(num) { | |
| let tmp = []; | |
| let nfib = 1; | |
| let i = 1; | |
| while (nfib <= num) { | |
| if (nfib % 2 === 1) tmp.push(nfib); | |
| i++; | |
| nfib = fib(i); | |
| } | |
| return tmp.reduce((a, b) => a + b); | |
| } | |
| sumFibs(4); |
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