title: Find Index Given Fibonacci Number Constant Time 1
signature: function findIndexGivenFibonacciNumberConstantTime1(n: number): number {
test_code: 
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function convertToString(value: any): string{
      return JSON.stringify(value, function (key, val) {
          if (val instanceof Set) {
              return Array.from(val);
          } return val;});
  }
  
  function validateSolution(actual: number, expected: number): boolean {
      return convertToString(actual) === convertToString(expected);
  }
  
  function driver(n: number, expected:number): string {
      try{
          if (validateSolution(PLACEHOLDER_FN_NAME(n),expected)){
              return "PASSED";
          }
          return "FAILED";
      } catch (error) {
        return error.name;
      }
      
  }
      
  function main(){
    let result = '';
    result = driver(20, 8);
    console.log(`TEST-0...${result}`);
  
    result = driver(95, 11);
    console.log(`TEST-1...${result}`);
  
    result = driver(39, 9);
    console.log(`TEST-2...${result}`);
  
    result = driver(21, 8);
    console.log(`TEST-3...${result}`);
  
    result = driver(94, 11);
    console.log(`TEST-4...${result}`);
  
    result = driver(79, 11);
    console.log(`TEST-5...${result}`);
  
    result = driver(56, 10);
    console.log(`TEST-6...${result}`);
  
    result = driver(62, 10);
    console.log(`TEST-7...${result}`);
  
    result = driver(23, 8);
    console.log(`TEST-8...${result}`);
  
    result = driver(3, 4);
    console.log(`TEST-9...${result}`);
  
  };
  
  main();
source_py: def find_index_given_fibonacci_number_constant_time_1(n):
      fibo = ((2.078087 * math.log(n)) + 1.672276)
      return round(fibo)
source_cpp: int find_index_given_fibonacci_number_constant_time_1(int n) {
    float fibo = 2.078087 * log ( n ) + 1.672276;
    return round ( fibo );
  }