5 Repeatable Steps I Follow to Solve Almost Any Coding Problem

• Understand the problem
• Explore Examples
• Break it Down
• Solve / Simplify
• Look Back and Refactor

1. Understand the problem

Input:
integer?
float?
string?
str("Hello There Blogue IS A BEauTIFUL %^$##@1144 !!!!!$%#")
Output:
integer?
float?
string?
result: { h: 2, e: 3, l: 2, o: 2, t: 1, r: 1, f: 1, u: 2, c: 1, k: 1, y: 1 }

2. Explore Examples

//example1
let str = '';


for (let i = 0; i < 9; i++) {
  str = str + i;
}
console.log(str);

//example2
const sentence = 'The quick brown fox jumps over the lazy dog.';

console.log(sentence.toLowerCase());

//example3
function testNum(a) {
  let result;
  if (a > 0) {
    result = 'positive';
  } else {
    result = 'NOT positive';
  }
  return result;
}

3. Break it Down

• Explicitly write out the steps you need to take.
• Comment out steps to be used

function countValues(str){
                                   var result = {};
                                  for(var i=0;i<str.length;i++)
                                 {
                                   var chara = str[i].toLowerCase();
     //conversion of string to lowercase as the same letter is in small and in capital,we don' want that
                                         if(result[chara]>0){   
                                            result[chara]++;
     //increments the count if condition is grater than 0;
                                           }else{
     //else makes it 1
                                                  result[chara] = 1;
                                           }
                                           }
        }
                                           console.log(result) ;
        }
countValues("Hello There Blogue IS A BEauTIFUL %^$##@1144 !!!!!$%#") 

4. Solve / Simplify

• Temporarily skip the difficulty.
• Write a simplified solution.
• Then incorporate that difficulty back in the code.

function countValues(str){
                                   var result = {};
                                   //for(var i=0;i<str.length;i++)
                                   for(var chara of str)
                                   {
                                   //var chara = str[i].toLowerCase();
                                   chara = chara.toLowerCase();
                                   
                                   //R.E to check lowercase and number
                                   if(/[a-z0-9]/.test(chara)){
                                   result[chara] = ++result[chara] || 1;
                                   
                                   // if(result[chara]>0){
                                   
                                   // result[chara]++;
                                   // }else{
                                   //                   result[chara] = 1;
                                   // }
                                   }
}
                                   console.log(result) ;
}
countValues("Hello There Blogue IS A BEauTIFUL %^$##@1144 !!!!!$%#") 

5. Look Back and Refactor

• Can you understand it at a glance?
• Can you use the result or method for other problem?
• Can you improve the performance of your solution?
• Can you think of other ways to refactor the code?
• How have other people solved the same problem?

function countValues(str){
                                   var result = {};
                                   for(var chara of str){
                                   
                                   if(isAlphaNumeric(chara)){
                                   chara = chara.toLowerCase();
                                   result[chara] = ++result[chara] || 1;
}
}
console.log(result) ;
}


function isAlphaNumeric(chara){
                                   var code = chara.charCodeAt(0);
if(!(code > 47 && code < 58)&& !(code > 64 && code < 91)&& !(code > 96 && code < 123))
{
return false; 
}
return true;
}
countValues("Hello There Blogue IS A BEauTIFUL %^$##@1144 !!!!!$%#")

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