problem

if else :

1 : https://atcoder.jp/contests/abc219/tasks/abc219_a

loop

1: https://www.codechef.com/LTIME90B/problems/BEGGASOL

2: https://www.codechef.com/LTIME92B/problems/EVENDIFF



array

pb 1: https://www.codechef.com/START13B/problems/VACCINQ


map -> pb2 --> https://www.codechef.com/problems/BUS

easy odd even pb3 ---> https://www.codechef.com/problems/ADJHATE







string :
1  : https://atcoder.jp/contests/abc219/tasks/abc219_b

2 : https://www.codechef.com/problems/FLOW006 (Sum of Digits)


3: https://www.codechef.com/problems/TEAMFOR


4 https://www.codechef.com/problems/KMAX2


contest pb

string zero one pb 1 : https://www.codechef.com/LTIME91B/problems/SWAP10HG



2 string pb 2: https://www.codechef.com/LTIME93B/problems/PALPALS


3 binary string 3 :  https://www.codechef.com/problems/MAGDOORS

4 . string len +char - 0-9


only map ---.>map --> pb3 --> https://www.codechef.com/problems/EQDIFFER  (1e9)


contest

1 string jum  1 : https://codeforces.com/contest/299/problem/B

2 divide : https://codeforces.com/contest/299/problem/A

3 number  : https://codeforces.com/problemset/problem/71/A

4 https://codeforces.com/problemset/problem/112/A

5 https://codeforces.com/problemset/problem/236/A

6 https://codeforces.com/problemset/problem/96/A